Get a completely accurate PD measurement
in seconds with this easy to use app.

Measure your PD value (pupillary distance) in millimeters. It’s important to get an accurate reading to ensure your lenses are centered, and your glasses fit properly. Using the iPD app will give you a completely accurate PD measurement within a range of +/- 0.5mm err.


the ipd app works in 4 simple steps.

by using the rear camera of the phone


Take off your glasses to start the test


Hold a card with a black magnetic strip against your forehead, just above your eyebrows


Stand up, raise your head & hold smartphone straight at eye level


Rotate the phone to face the rear camera and wait for the double flash


Copy and paste your prescription from your current glasses.

This app is perfect for quickly finding out your most recent prescription. Using the CopyGlass app will give you a completely accurate prescription within a range of +/- 0.25D err for near and farsighted vision.



Just like in an optometrist office, iPrescribe manipulates the optical and perceptual phenomena to give you a completely accurate prescription for nearsighted vision, including astigmatism.

You’ll have a new prescription ready to use within 10 minutes — clinically tested to deliver results within a range only +/- 0.25D error — a closeness never before seen in any other app.


Download now on the app stores

app storegoogle-play