Lens index: what 1.50, 1.60 and 1.67 mean
Higher index can change thickness, but it is only one part of choosing a lens.
A LITTLE KNOWLEDGE. A CLEARER CHOICE.See clearly.
CLEAR LENSSee clearly.
Choose confidently.
From your first prescription to your next pair of lenses. Make sense of the details, one clear explanation at a time.
VOL. 01 — A FRESH PERSPECTIVE
START HERE · A BEGINNER’S GUIDEYour first glasses?
Your first glasses?
Let’s make it simple.
A thoughtful guide from eye exam to everyday comfort. Know what to ask before you choose.
Explore the guide →A CLEARER PERSPECTIVE
EXPLORE THE ESSENTIALS
All guides →Start with your questions.
01
Vision basics
Understand what your eyes need.
02Lens materials
Look beyond the index number.
03Coatings & light
Separate useful features from claims.
04Progressive lenses
Find your way from near to far.
05Contact lens care
Everyday habits for safer wear.
06Buying glasses
Ask better questions at your appointment.
READ, UNDERSTAND, DECIDE
A little clarity goes a long way.
Do blue-light glasses help with screen strain?
What a Cochrane review does—and does not—tell us about blue-light filtering lenses.
Read your glasses prescription without guessing
A guide to SPH, CYL, AXIS, ADD and the fitting measurements recorded alongside them.