What Are High-Index Lenses?
LENS GUIDE What Are High-Index Lenses? 1.56 vs 1.60 vs 1.67 vs 1.74 Higher index lenses allow the required prescription power to be achieved with a thinner lens design. But which index is right for…
LENS GUIDE What Are High-Index Lenses? 1.56 vs 1.60 vs 1.67 vs 1.74 Higher index lenses allow the required prescription power to be achieved with a thinner lens design. But which index is right for…