Only 2 steps
1) Measure your PD with our online service which uses your computer's or smartphone's camera.
2) Take note of your PD measurements. While you are checking out enter those measurements during the enter PD step of checkout.
PD or Pupillary Distance measures the distance between the pupils of your eyes. This measurement is used to determine where you look through the prescription lens of your glasses. Everyone’s eyes are spaced apart differently, thus the PD should be as accurate as possible for prescription glasses. The average adult's PD is between 54-74 mm; men 64-66 mm and women 62-64 mm.