How to Measure Your Pupillary Distance (PD) at Home

While your eye doctor usually provides your PD measurement with your prescription, sometimes it’s not included. No worries - you can easily measure your PD yourself from the comfort of home!

Here’s how:

1. Stand about 8 inches (20 cm) away from a mirror.
2. Hold a millimeter ruler firmly against your brow, keeping your face straight and level.
3. Close your right eye.
4. Align the ruler’s zero mark with the center of your left pupil.
5. Without moving your head, close your left eye and open your right eye.
6. The number on the ruler that lines up with the center of your right pupil is your PD measurement in millimeters.

For best results, repeat this process a few times and take the average.