A thinner lens material, referred to as higher index lenses, can improve the comfort and cosmetic appearance of your lenses by allowing vision correction with a thinner and lighter lens. You may want ...

If you order a high-index progressive prescription with the full suite of coatings and a photochromic lens you’ll probably come in a bit over $400. Warby Parker’s design approach is minimal to a fault ...

But what does that mean? The higher the prescription, the thicker the glasses' lenses will be. Even with high-index lenses, you’ll still have some extra heft there that mild prescription or blue-light ...

Gradient index lenses are optical lenses — often planar — which are used in specialized applications. Gradient index (or GRIN) optics encompasses optical effects produced by gradual variation of the ...

Our top 3 favorite places to buy glasses online with insurance: Best overall: Eyebuydirect Accepts FSA/HSA dollars for prescription ... Covry Best for high-quality lenses: Roka Best customizable ...

This type of lens is frequently used in place of other negative lenses for high-index infrared materials. They are useful for beam-expanding application, which require minimal spherical aberration.