: Prices are often 50–70% lower than physical stores.
: Many online pairs come with basic anti-scratch or UV protection, but you may want to add blue light blocking or anti-reflective coatings for a small fee. buy glasses online usa
: This is the distance between your pupils in millimeters. While doctors don't always include it, you can measure it yourself or use online PD tools offered by many retailers. : Prices are often 50–70% lower than physical stores