Thin lenses - also known as High Index Lenses have thinner edges compared to the same prescription made from standard lenses. They are lighter in weight as they require less material.
High Index Lenses are recommended by Shade Station for individuals who have a high prescription - as the lenses are more aesthetically appealing.
The are also recommended if you would like a rimless frame as they provide superior strength.
A 1.67 index lens is approximately 40% thinner than a standard index lens. Thin lenses from Shade Station come with an anti-reflective coating on all thin high index lenses as they reflect more light than standard lenses.