Email Rx's To lab@eyeglasslabonline.com
Fax Rx's To 1(866) 709-9780
Call us at 1(800) 470-5930 
PD or ​pupillary distance is the measurement between both right and left eye in millimeters
this measurement should be taken only by a skill eyecare professional to avoid mistakes this measurement can also be take off an existing pair of eyeglasses or you can just ask your eye doctor or optician for it. This measurement is part of your vision record and must be given to you by law if requested.

When you send in your own frames to our lab for lens replacement our optician will match each measurement from your old lens to your new prescription lens, This also includes Bifocal and progressive height measurements. If you have any questions please contact us.  
PD / Pupillary Distance