ASPHERIC SUPER HIGH - INDEX 1.74 ASPHERIC HIGH - INDEX 1.67 INDEX 1.67 (Super Hi-Index AS UV) ASPHERIC HIGH - INDEX 1.61 HIGH - INDEX 1.61 NEW MIDDLE-INDEX UV 1.56 ASPHERIC MIDDLE - INDEX 1.56 MIDDLE - INDEX 1.56 CR 39 LENSES - INDEX 1.50 POLYCARBONATE - INDEX 1.58 PHOTOCHROMIC MIDDLE - INDEX 1.56