PD & Segment Height Measurement
Choose Your Measurement
This tool uses your computer’s built-in webcam or an attached
USB webcam to estimate pupillary distance (PD).
If you need segment height, you will also be asked to put on
the actual eyeglass frame and identify the bottom edge of each
lens.
Important: Use a well-lit room and sit directly
in front of the camera.
Position Your Face
- Sit directly in front of your computer camera.
- Look straight into the camera.
- Keep your head level.
- Remove glasses for the PD measurement.
- Keep your face centered in the camera window.
Your PD Measurement
Put On Your Glasses
Put on the actual eyeglass frame for which you want the
segment height measured.
Keep your head in the same position and look directly
into the camera.
Make sure both eyes and the entire lower edge of each lens
are visible.
Mark the Bottom of Each Lens
Red crosshairs indicate the approximate position of your pupils.
Click directly on the bottom edge of the right lens
beneath the right pupil.
Then click on the bottom edge of the left lens
beneath the left pupil.
Your Measurements