What Does Pupillary Distance Mean?

Pupillary distance or interpupillary distance is the distance measured in millimeters between the centers of the pupils of the eyes. This measurement is different from person to person and also depends on whether they are looking at near objects or far away.

What happens if PD is wrong on glasses?

Your Glasses

If your pupil distance does not match where the centers of your pupils are, your vision can be affected– Like wearing someone else's glasses! The wrong PD can induce eye strain, fatigue, headaches and blurry vision.

What is a normal pupillary distance?

An average PD measurement is about 62mm for women and 64mm for men. For children the measurement usually ranges from 41 to 55 mm.