# 1 highest ranked app on Google Play for measuring pupillary distance.
GlassifyMe’s PD Meter App is the perfect tool to measure your pupillary distance (PD) quickly and accurately. Just take a photo holding a full size card with the magnetic strip facing the camera and let us do the rest.
Note: The use of a credit card is NOT required or recommended. Please use a points or rewards card. The card is only used for reference sizing.
What is PD?
PD, short for pupillary distance, is the distance between the centers of your pupils in millimeters. This measurement is important when manufacturing your prescription glasses to ensure you get adequate vision. This measurement is also necessary for your RV
Headsets (virtual reality).
Why the PD Meter app?
– Measure your distance and reading ability in 3 quick steps
– automatically detects your eyes and pupils
– Advanced algorithm that calculates and gives precise results
– Take a selfie, have a friend take your photo, or upload a photo from gallery.
– Get exclusive discounts for your purchases on GlassifyMe.com
**Watch the full video tutorial at https://youtu.be/eIuSNoEZWig
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