PD Measurement
 

Pupillary Distance (PD) is the space between pupils. All eyes are unique and spaced differently, this measurement makes sure your prescription lenses work for you. Without it, your vision may be blurry.

Our PD calculator utilizes your computer's webcam or smartphone camera to calculate your PD.

TIPS

Requirements

You'll need access to the camera on your laptop, tablet or mobile device. Lastly, find a room that is well-lit and avoid backlight.

Take Note

Take down your PD measurement. You will need this number later, to complete your prescription order. The PD tool will give you one number (ex: 64mm), this is the number you will provide to the prescription team (rx@9five.com).