Frequently Asked Questions

What is my PD, and how do I get it?

  1. Print out the PD ruler at 100% without scaling.
  2. Fold the PD ruler in half along the indicated line.
  3. Measure yourself in front of the mirror or have a friend help you.
  4. Place the PD ruler over the bridge of your nose with the 0 above the center of your left pupil.
  5. Look straight ahead and mark the stop on the PD ruler that lines up with the center of your right pupil.
  6. Enter your PD measurement for your prescription.