Question: what is the difference between polycarbonate and high index?
Answer: We offer a few different indexes on our lenses. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. These lenses are super-thin but are also more expensive than the polycarbonate option.