You are here: Products > PD Measure >
Your PD (Pupillary Distance),
sometimes called OC (Optical Center)
is measured in mm



To measure your own PD:

Look into a mirror. The numbers will appear backwards!


1. Hold the mm ruler on the bridge of your nose for stability. Pretend you can look through the mirror (X-ray vision) to see the horizon far away. This keeps your eyes from rotating in toward your nose.

2. Point your face [nose] straight into a mirror.
--- CLOSE your left eye to avoid parallax error. ---

3. Align the ruler's zero to the center of your right pupil. The pupil is the black spot in the middle of the eye.

4. Without moving the ruler, close your right eye and open your left eye.

5. Read the millimeter line under your left pupil (careful -- backwards in mirror!).
--- Keep you face "square" to the mirror to avoid parallax error. ---

6. Repeat two or three times to confirm accuracy.



Site Map

15332 Antioch Street #329, Pacific Palisades, CA 90272
TEL: (310) 230-3377    FAX: (310) 459-5067
eMail

BBB Reliability SealOrbis

Copyright/Legal Notice, Privacy Statement, and warranty and return info
©2003-2007 HydroOptix LLC, all rights reserved.