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Learn when to use each, how to read the PD on your prescription, and why accurate measurements are important.\r\n","Single or Dual PD—Which One Do You Need?","https://image.lensmartonline.com/2025-01-27/1737947233854047.jpg","single-vs-dual-pd-for-eyeglasses","\u003Cp>\u003Cspan style=\"background-color: rgb(255, 255, 255); font-family: "Times New Roman"; letter-spacing: 0px; text-align: justify;\">When you buy new eyeglasses, one of the most important measures taken is the distance between your pupils, also known as Pupillary Distance or PD. Just like shoes need the right size for comfort, eyeglasses must have the right PD measurement if they are to work properly. There are two ways to measure PD: take one total measurement across both eyes, known as Dual PD, or measure each eye separately, known as Single PD.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\"margin: 4px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Pupillary Distance (PD): Single vs. Dual Measurements\u003C/span>  \u003C/h2>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Your \u003C/span>\u003Ca href=\"https://my.clevelandclinic.org/health/articles/pupillary-distance\" rel=\"nofollow\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px; font-family: "Times New Roman"; color: rgb(30, 111, 255); background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; letter-spacing: 0px; vertical-align: baseline;\">pupillary distance\u003C/span>\u003C/a>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\"> (PD) is the space between your pupils, measured in millimeters. \u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(51, 51, 51);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">PD measurements\u003C/span> \u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">come in two main forms: Single PD (also called Monocular PD) and Dual PD (also called Binocular PD). Both serve the same purpose but work differently for various eyewear needs.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Single/Monocular PD\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Single PD measures the distance from the bridge of your nose to the center of each pupil separately. For example, your right eye might measure 31mm and your left eye 32mm, written as "31/32." This detailed measurement is particularly valuable for:\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">High-power prescriptions\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Ca href=\"https://www.lensmartonline.com/eyeglasses/progressive-lenses\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 15px;font-family: 'Times New Roman';color: rgb(30, 111, 255);letter-spacing: 0;vertical-align: baseline\">Progressive lenses\u003C/span>\u003C/a>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">People with asymmetrical facial features\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Complex vision corrections\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Dual/Binocular PD\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Dual PD is one measurement spanning the distance between both pupils. It's typically expressed as a single number, like "63mm." This simpler measurement works well for:\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Basic \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/blog/eyeglass-lens/details/single-vision-lenses-vs-multifocal-lenses\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(30, 111, 255);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">single-vision lenses\u003C/span>\u003C/a>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Standard prescriptions\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Symmetrical face shapes\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Ready-made \u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(51, 51, 51);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">reading glasses\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cimg src=\"https://image.lensmartonline.com/f1b24202501271108169331.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" title=\"1737947296744276.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" alt=\"3.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" width=\"407\" height=\"341\" style=\"font-family: 等线; text-align: justify; text-wrap-mode: wrap; width: 407px; height: 341px;\"/>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Key Differences at a Glance:\u003C/span>\u003C/p>\u003Ctable>\u003Ctbody>\u003Ctr style=\"height: 18.8667px\" class=\"firstRow\">\u003Ctd width=\"203\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Feature\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"212\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Single PD\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"201\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Dual PD\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 31px\">\u003Ctd width=\"203\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Format\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"212\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Two numbers (e.g., 31/32)\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"201\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">One number (e.g., 63)\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 31px\">\u003Ctd width=\"203\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Accuracy Level\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"212\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">More precise\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"201\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Standard precision\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 43.1333px\">\u003Ctd width=\"203\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Best Used For\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"212\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">High prescriptions, progressives\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"201\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Basic prescriptions\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 31px\">\u003Ctd width=\"203\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Measurement Method\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"212\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Individual eye measurements\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"201\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Total distance measurement\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 18.8667px\">\u003Ctd width=\"203\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Cost to Measure\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"212\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Usually higher\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"201\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Generally lower\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 31px\">\u003Ctd width=\"203\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Common Range\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"212\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">29-35mm per eye\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"201\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">58-70mm total\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003C/tbody>\u003C/table>\u003Cp class=\"paragraph text-align-type-justify\" style=\"margin: 12px 0 16px;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">How to Read PD on Your Prescription\u003C/span>\u003C/h2>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Common PD Notation Formats\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 0 0 0 22px;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 16px;background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Single Number Format:\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\"> When you are \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/blog/eyeglass-guide/details/how-to-read-eye-prescription\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(30, 111, 255);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">reviewing your prescription\u003C/span>\u003C/a>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">, you may find a single number recorded in a format such as "PD 63" or simply "63." This reflects your Dual PD and is the total millimeter distance between your pupils. Doctors sometimes record this as "Distance PD: 63" or "B.PD 63," where "B.PD" is an abbreviation for Binocular PD. All these reflect the same meaning\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">—\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">complete distance across both pupils.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 0 0 0 22px;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 16px;background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Split Number Form\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 15px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">at: \u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">A split format is two numbers with a slash between them, like "31/32." The first number is your left eye measurement, and the second shows your right eye measurement. This may be written in more formal notation by doctors or other medical professionals, like "OD 31 / OS 32," where OD is your right eye and OS refers to your left eye. Both are saying the same thing—your measurements for each eye\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Where to Find PD on Your Prescription\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">PD measurements can appear in various places on your prescription form. Most commonly, you'll find it at the top or bottom of the prescription. Some doctors place it in a dedicated "Additional Information" section, while others include it in a specific box labeled "PD" or "Pupillary Distance." The location varies depending on the prescription format your doctor uses.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">What If PD Is Not on My Prescription?\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Many prescriptions \u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(51, 51, 51);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">do not come with the PD measurement\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">, and that is okay. This is normal, as eye doctors often do not include PD because optical shops have to take their own measurements for accuracy in many cases. Some doctors keep PD measurements in their office records rather than on the prescription itself. If you need your PD measurement and it's not on your prescription, you can call your eye doctor's office or simply walk into an optical shop for a measurement. While online tools exist for self-measurement, they're generally less reliable than professional measurements.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Quick Reference Chart\u003C/span>\u003C/h3>\u003Ctable>\u003Ctbody>\u003Ctr style=\"height: 33.8667px\" class=\"firstRow\">\u003Ctd width=\"173\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Notation Type\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"166\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Example\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"244\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Meaning\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 33.8667px\">\u003Ctd width=\"173\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Single Number\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"166\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">"PD 63"\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"244\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Total distance between pupils\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 33.8667px\">\u003Ctd width=\"173\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Split Numbers\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"166\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">"31/32"\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"244\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Individual eye measurements\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 47.0667px\">\u003Ctd width=\"173\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">OD/OS Format\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"166\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">"OD 31 OS 32"\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"244\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Right eye/Left eye measurements\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 47.0667px\">\u003Ctd width=\"173\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">With Distance Note\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"166\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">"Dist. PD 63"\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"244\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Distance PD measurement\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003C/tbody>\u003C/table>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">All PD measurements use millimeters as the standard unit, with most adults falling between 58-70mm for total PD measurement.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cimg src=\"https://image.lensmartonline.com/0dbe9202501271110251119.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" title=\"1737947425682675.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" alt=\"1.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" width=\"525\" height=\"237\" style=\"width: 525px; height: 237px;\"/>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">How to Choose the Right PD for Your Glasses\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Your ideal type of PD measurement depends on several key factors. Stronger prescriptions, especially over +/-4.00 \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/hu/blog/eyeglass-basics/details/what-is-diopter\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(30, 111, 255);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">diopters\u003C/span>\u003C/a>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">, may want more precise measurements for the best possible vision correction. The type of lenses also makes a difference: specialized lenses require more detailed measurements than basic lenses. Your facial symmetry plays a part, too, as some people are just naturally asymmetrical in their pupil positioning and therefore require individual eye measurements.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">When Single PD Works Best\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Complex vision needs require single PD measurements. If your prescription is stronger, such as +/-4.00 or higher, it's recommended that you make the measurements for each eye in order to position your lenses perfectly. Single PD measurement is a perfect application of Progressive Lenses because these progressive lenses have a \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/blog/eyeglass-basics/details/multi-focus-reading-glasses\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(30, 111, 255);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">multiple-point focus\u003C/span>\u003C/a>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\"> that aligns exactly with the eyes. These can benefit better Single PD measurements because of asymmetrical features in people—for example, if one eye is higher than the other.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">When Dual PD Is Sufficient\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">With simple correction needs, Dual PD serves the purpose just fine. For single vision, basic prescriptions less than +/- 4.00 usually would not require the extra precision needed in measuring both individual eyes.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Professional Recommendations\u003C/span>\u003C/h3>\u003Ctable>\u003Ctbody>\u003Ctr style=\"height: 27px\" class=\"firstRow\">\u003Ctd width=\"243\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Prescription Type\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"192\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Recommended PD Type\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"390\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Reason\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 37.6px\">\u003Ctd width=\"243\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Strong (>+/-4.00)\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"192\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Single PD\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"390\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Higher precision needed\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 58.7333px\">\u003Ctd width=\"243\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Progressive/Multifocal\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"192\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Single PD\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"390\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Multiple focal points require exact alignment\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 37.6px\">\u003Ctd width=\"243\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Basic Single Vision (<+/-4.00)\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"192\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Dual PD\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"390\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Standard precision sufficient\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd width=\"243\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Ca href=\"https://www.lensmartonline.com/eyeglasses/reading-glasses/\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 15px;font-family: 'Times New Roman';color: rgb(30, 111, 255);letter-spacing: 0;vertical-align: baseline\">Reading Glasses\u003C/span>\u003C/a>\u003C/p>\u003C/td>\u003Ctd width=\"192\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Dual PD\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"390\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Simple lens design\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 37.6px\">\u003Ctd width=\"243\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Asymmetrical Features\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"192\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Single PD\u003C/span>\u003C/p>\u003C/td>\u003Ctd width=\"390\" colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Accounts for facial differences\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003C/tbody>\u003C/table>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Most eye care professionals suggest getting your PD measured in person rather than relying on self-measurement, especially for complex prescriptions or specialized lenses.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cimg src=\"https://image.lensmartonline.com/d265f202501271109006048.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" title=\"1737947340145617.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" alt=\"2.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" width=\"471\" height=\"312\" style=\"width: 471px; height: 312px;\"/>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">How Experts Measure Your PD\u003C/span>\u003C/h2>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">What Tools Do Experts Use?\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">If you go to an eye care professional, they will measure your PD with highly technical machinery. The main gadget is something called a pupillometer\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">—\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">think of it as special binoculars that give super-precise readings of the distance between your pupils. They also check such measurements with simple but quite efficient tools: a PD ruler—a so-called PD stick—and digital modern devices with cameras able to make a shot of just exact measures of where the pupils of the eye are situated.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">How Does the Measurement Work?\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Your optician will first measure your "distance PD" by asking you to look at something far away—this help your eyes settle into their natural position. If you need reading glasses or \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/eyeglasses/progressive-lenses\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(30, 111, 255);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">progressive lenses\u003C/span>\u003C/a>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">, they'll also measure your "near PD" by having you focus on something close up. They will keep your head straight and steady throughout the process to get an accurate measurement; this usually takes only a few minutes in total.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Get the Most Accurate PD Reading Every Time\u003C/span>\u003C/h3>\u003Ctable>\u003Ctbody>\u003Ctr style=\"height: 27.1333px\" class=\"firstRow\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">What to Watch\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Why It Matters\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">How to Get It Right\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 61.9333px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Head Position\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Even slight tilts can throw off your measurement by 1-2mm\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Keep your chin level and look straight ahead, just like taking a passport photo\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 61.9333px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Room Lighting\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Bright or dim light makes your pupils change size, affecting accuracy\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Make sure the room has normal, steady lighting\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">—\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">not too bright or dark\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 61.9333px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Where You Look\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Your eye position shifts when looking at different spots\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Focus on one specific point at eye level about 20 feet away (or as directed)\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 72.9333px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Staying Still\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Any head movement can lead to wrong measurements\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; background: rgb(255, 255, 255); vertical-align: middle; padding: 6px 13px; border-color: rgb(203, 205, 209); border-width: 1px; border-style: solid;\">\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Use the headrest provided and try to stay as still as possible for a few seconds\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003C/tbody>\u003C/table>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Professional measurements typically achieve accuracy within 0.5mm, which is crucial for optimal vision correction. To ensure this precision, opticians often take multiple measurements and average the results.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 15px;font-family: 'Times New Roman';font-weight: bold;letter-spacing: 0;vertical-align: baseline\">Pro Tip: \u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 15px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Think of it like taking a clear photo\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 15px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">—\u003C/span>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 15px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">the steadier you are, the better the results!\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.7;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 19px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Quality Checks\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Before finalizing measurements, professionals perform several verification steps:\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Compare measurements with standard ranges\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Take readings from different angles\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Cross-reference with previous measurements if available\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-justify MsoNormal\" style=\"margin: 8px 0;text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan style=\"font-family: Wingdings\">\u003Cspan style=\"font-size: 15px;letter-spacing: 0;vertical-align: baseline\">●\u003Cspan style=\"font-family: 'Times New Roman'\"> \u003C/span>\u003C/span>\u003C/span>\u003Cspan data-font-family=\"Times New Roman\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Verify measurements match facial symmetry\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\"margin: 8px 0 8px 52px;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\"margin: 8px 0 8px 52px;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cimg src=\"https://image.lensmartonline.com/d495f20250127105338168.png?imageView2/2/interlace/1/ignore-error/1/format/webp\" title=\"1737946418854078.png?imageView2/2/interlace/1/ignore-error/1/format/webp\" alt=\"image.png?imageView2/2/interlace/1/ignore-error/1/format/webp\" style=\"float: left; width: 395px; height: 220px;\" width=\"395\" height=\"220\"/>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\"margin: 8px 0 8px 52px;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cbr/>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">\u003Cbr/>\u003C/span>\u003C/h2>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">\u003Cbr/>\u003C/span>\u003C/h2>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">\u003Cbr/>\u003C/span>\u003C/h2>\u003Cp>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">\u003Cbr/>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">\u003Cbr/>\u003C/span>\u003C/h2>\u003Cp>\u003Cbr/>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">\u003Cbr/>\u003C/span>\u003C/h2>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.3;margin-top: 0;margin-bottom: 0;margin-left: 0\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 21px;font-family: 'Times New Roman';letter-spacing: 0;vertical-align: baseline\">Get Your Perfect PD Measurement Today\u003C/span>  \u003C/h2>\u003Cp class=\"paragraph text-align-type-justify\" style=\";text-align: justify;font-family: 等线;font-size: 16px;line-height: 1.3\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">Whether you need a Single PD for complex prescriptions or a Dual PD for basic lenses, it makes all the difference in how well \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/eyeglasses/frames/ligeia-rectangle-black-11156/\">\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';color: rgb(30, 111, 255);background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\">eye glasses\u003C/span>\u003C/a>\u003Cspan data-font-family=\""Times New Roman"\" style=\"font-size: 16px;font-family: 'Times New Roman';background: rgb(255, 255, 255);letter-spacing: 0;vertical-align: baseline\"> will work for you. As online measurements may seem so convenient, nothing replaces the accuracy of a professional measurement at your local eye care center. Set off right into perfect sight: schedule that professional PD through your eye-care provider at times when you get new glasses or an updated prescription for proper glasses. Your eyes are worthy of only the best, and proper PD creates the foundation for comfortable and truly effective eyeglasses.\u003C/span>\u003C/p>\u003Cp>\u003Cbr/>\u003C/p>","Single or Dual PD for Eyeglasses: Which One Is Right for You?","What is the difference between mono vs. Pupillary Distance for glasses? Learn when to use each, how to read the PD on your prescription, and why accurate measurements are important.","2025-01-27 11:10:40","{\"en\":\"What is the difference between mono vs. Pupillary Distance for glasses? Learn when to use each, how to read the PD on your prescription, and why accurate measurements are important.\\r\\n\",\"fr\":\"\",\"es\":\"\",\"de\":\"\",\"hu\":\"\"}","/eyecare/details/single-vs-dual-pd-for-eyeglasses/",[1077,1086,1094,1103,1112],{"id":1078,"type_id":11,"sort":217,"desc":1079,"title":1080,"img_alt":8,"img":1081,"f_title":993,"url_title":1082,"label":8,"author":1083,"head_title":1084,"head_description":1079,"head_keywords":8,"create_time":1085,"goto_url":418},474,"As you are browsing our vast catalog of custom eyeglass frames, you may be wondering how to place an order for RX glasses. While it may seem more complex on the surface, placing an order  with lensmart is as easy as buying anything else over the Internet.","How to Order Glasses Online","https://image.lensmartonline.com/2025-03-13/1741850666666457.jpg","how-to-buy-prescription-eyeglasses-online","Lensmart","How To Buy Prescription Eyeglasses Online","2025-03-06 10:36:08",{"id":157,"type_id":11,"sort":22,"desc":1087,"title":1088,"img_alt":8,"img":1089,"f_title":993,"url_title":1090,"label":8,"author":1083,"head_title":1091,"head_description":1087,"head_keywords":8,"create_time":1092,"goto_url":1093},"Learn the key differences between single vision and progressive lenses. Find out which option fits your vision needs, lifestyle, and long-term eye health goals.","Single Vision versus Progressive Lenses: A Detailed Guide to Choosing Your Lenses","https://image.lensmartonline.com/2025-05-09/1746777985563001.jpg","single-vision-vs-progressive-lenses-guide","Single Vision vs Progressive Lenses | Complete Expert Guide","2021-09-23 09:29:33","/blog/eyeglasses-online-buying-guide-blog/details/single-vision-vs-progressive-lenses-guide/",{"id":1095,"type_id":11,"sort":10,"desc":1096,"title":1097,"img_alt":8,"img":1098,"f_title":993,"url_title":1099,"label":8,"author":993,"head_title":1100,"head_description":1096,"head_keywords":8,"create_time":1101,"goto_url":1102},992,"Tortoiseshell works for everyone because its multi-tone pattern naturally matches any skin tone. Learn how to choose between honey, classic, and amber frames.","Tortoiseshell Glasses: Why They Work for Almost Every Face and Skin Tone","https://image.lensmartonline.com/product/2026-04-15/1776241099338968.jpg","tortoiseshell-glasses-color-matching-tips","Tortoiseshell Glasses 2026: Styling Tips and Color Guide","2026-04-15 16:31:18","/blog/eyeglasses-online-buying-guide-blog/details/tortoiseshell-glasses-color-matching-tips/",{"id":1104,"type_id":11,"sort":10,"desc":1105,"title":1106,"img_alt":8,"img":1107,"f_title":993,"url_title":1108,"label":8,"author":993,"head_title":1109,"head_description":1105,"head_keywords":8,"create_time":1110,"goto_url":1111},990,"Shift facial proportions instantly by choosing frames with the right bridge width and visual weight. Learn to make your nose smaller and face thinner.","Glasses and Face Shape: How to Slim, Lift, and Balance Your Features","https://image.lensmartonline.com/product/2026-04-07/1775550547695498.jpg","glasses-alter-facial-proportions-guide","How to Change 5 Facial Features With the Right Glasses","2026-04-07 16:42:10","/blog/eyeglasses-online-buying-guide-blog/details/glasses-alter-facial-proportions-guide/",{"id":1113,"type_id":11,"sort":1114,"desc":1115,"title":1116,"img_alt":8,"img":1117,"f_title":993,"url_title":1118,"label":8,"author":1083,"head_title":1119,"head_description":1115,"head_keywords":8,"create_time":1120,"goto_url":1121},467,118,"Want to know what makes some eye colors so rare? Get fascinating insights into unique eye colors and their origins in this comprehensive guide.","What Are the Rarest Eye Colors in the World?","https://image.lensmartonline.com/2025-02-25/1740461258763220.jpg","worlds-rarest-eye-colors-explained","Rare Eye Colors Guide: Beyond Brown, Blue, and Green","2025-02-25 13:28:40","/blog/eyeglasses-online-buying-guide-blog/details/worlds-rarest-eye-colors-explained/"]