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About PD (Pupil Distance)
Your pupillary distance, or PD, is the distance between the centers of your pupils in millimeters (mm).
This measurement is necessary to ensure the correct positioning of your lenses within the frame you have chosen.
You have several ways to obtain Pupil Distance, but we strongly recommend to have your PD measured by a professional.
- If you bought glasses before, contact the store you got your glasses from and ask them for your PD(recommended).
- Go to a local eyewear store or optometrist office and get your PD measured. Most of them will only charge $5 for measuring your PD(recommended).
- Contact your optometrist for your PD(recommended).
- Measure the PD yourself, though not recommended
To measure your Pupillary Distance (PD):
Place a regular ruler on the bridge of your nose. Have a friend face you about arms length away. Have your friend measure the distance between the center of your pupils (the black dots in the middle of your eyes). Or you can do it yourself simply by looking in the mirror. If you need your glasses on to do this, you can draw dots on the lenses where your pupils are (using a magic marker or highlighter); then take the glasses off and measure the distance between them.
It's simple -- like playing connect the dots!
As a guideline:
Most adults' PD's are between 55-65. Most kids' PD's are between 42-54.