How do I measure my pupillary distance (PD)?

By Published On: September 7th, 2023

To measure your pupillary distance (PD) accurately, follow these steps:

  1. Stand in front of a mirror with a ruler or PD measuring tool.
  2. Focus on your reflection and hold the ruler against your brow.
  3. Align the ruler’s zero point with the center of your left pupil.
  4. Have someone help you measure the distance to the center of your right pupil.
  5. This measurement is your PD, typically expressed in millimeters.
Share this Answer