How To Measure Your PD

What is Pupillary Distance

Pupillary distance (PD) measures the space between the pupils of your eyes

Why is it important

It ensures that you are looking through the optical center of the lenses

How to Measure

Just look straight, and use a ruler to measure

It's better to ask your family or friend to help measuring.

Please measure several times to get more accurate value.

how to measure pd

As a reference:

Normal PD range for adult: 58 - 68 mm

Normal PD range for kids: 42 - 52 mm