Measure your pupillary distance (PD)
PD is the distance between your pupils, and it's used to help center a prescription correctly in your frames. Before using our PD tool, review the steps below.
1. Wearing glasses? Take them off for your photo.
It also helps to be in a well-lit area with a clean background.
2. Adjust your screen and look directly at the camera.
It should be positioned straight on with your face centered.
3. Place any card with a magnetic strip under your nose and snap a photo.
Make sure the card is touching your face, with the strip facing outward and right side up.