... .70 aspheric lens, 1.70 Titan lens, CR39 Lenticular lens, 1.61 High-index lens, 1.61 Hicyl lens Semi-finished ... /flat top bifocal Mineral 1.523 Lens, CR39 sun lens, PC Polarized lens, 1.499 Flat top bifocal optical ... +300Outer packing:25 boxes/ctn Carton dimensions: 51 x 32 x 46cm1,Index: 1.499 1.56 1.61 1 ... your eyes better.3, light: lighter than pc lens, reduce the compression to the nose bridge,lightly ...