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1 Measure the distance between the two dots on your lenses with a millimeter ruler. 2  That's your distance PD. 3  If you need a near PD for reading or computer glasses, just do the same procedure but focus instead on the object you will be looking at, either reading material or computer monitor.
Answers (5) Your PD stands for Pupillary Distance, which is the distance between your pupils in millimeters, Your PD is very important for accurately fitting your lenses to achieve vision acuity. PD (OU), written as 62, means the Binocular PD which is for both eyes.