High-Index Lenses
The thinnest, lightest lenses for stronger prescriptions
What are High-Index Lenses?
High-index lenses are made from advanced materials that bend light more efficiently than standard plastic. This means they can be made much thinner while still providing the same vision correction.
The "index" number (1.67, 1.74, etc.) refers to the refractive index of the material. The higher the number, the thinner and lighter your lenses will be – especially important for stronger prescriptions.
Index Comparison
1.67 High-Index
30% thinner than standard plastic
Moderate Rx
1.74 High-Index
50% thinner than standard plastic
Strong Rx
Bar shows relative lens thickness – shorter bar = thinner lens
Benefits
Ultra Thin
Up to 50% thinner than standard lenses
Lightweight
More comfortable for stronger prescriptions
Better Aesthetics
Less "coke bottle" effect, more flattering
Frame Flexibility
Works with smaller, fashionable frames
Recommended For
Prescriptions stronger than +/-4.00
Anyone who dislikes thick, heavy lenses
People who prefer small, fashionable frames
Those concerned about lens appearance