How do I measure my Pupillary Distance (PD)?

Eye doctors should list your PD when they fill out a prescription for you, but sometimes they don’t. No worries, if it’s not there, you can still measure your pupillary distance on your own at home.

All you need is a mirror, a ruler and to follow these steps:

1. Stand in front of a mirror, 8 inches away.
2. Hold the ruler against your eyebrow. Keep your face straight.
3. Close your right eye. Position the ruler’s 0 mm line above the left pupil’s center.
4. Look straight. Open your right eye and close your left one.
5. The distance (in mm) between the ruler’s starting point and the right pupil’s center is your PD.

That’s it, you have your PD. We recommend measuring your pupillary distance 3 times to make sure the measurements are consistent and accurate - especially if you intend to get progressive lenses.