Here’s everything you need to know when choosing your lenses—in the order you’ll need to know it when you order

How-To Guides

Measuring your PD


A personalized fit starts with measuring your pupillary distance-that's the space between the centers of each of your pupils. It's measured in millimeters and tells the lens maker where to put the optical center on each lens. You can ask your eye doctor to include your PD measurement on your prescription, or if you don't have it, here's how you can measure it yourself.

STEP 1: Put on glasses. Have a felt tip marker handy!

Step One - Put on glasses. Have a felt tip marker handy

STEP 2: Focus on an object at least 20 feet away...