Eyewear Guide

It is time to update your glasses prescription when your vision changes, when your glasses no longer feel comfortable for everyday tasks, or when your optometrist...

Pupillary distance, usually shortened to PD, is the distance between the centres of your two pupils, measured in millimetres. It tells the lens maker exactly where...

Your glasses prescription is a short code that tells a lens maker exactly how to correct your vision. It lists numbers for each eye, such as...

Eyewear comes with a lot of jargon. This A to Z glossary explains more than 40 common terms for frames, lenses, sunglasses and prescriptions in plain...