... Density(g/cm3):3.005. Sph: 3.0020.00Cyl: 0.004.006. high quality with low price7. if you are ... me for detailsBesides, we can supply you the lens as following: 1. GLASS LENS (index 1.523, 1.70, uncoated & ... A/R, size 65/70 mm)2. CR-39 LENS (index 1.499, 1.56, 1.61, uncoated, H ... bifocal, flat-top bifocal, blended bifocal and curve bifocal lens)4. PROGRESSIVE LENS. 1.70 asp white hi-index glass ...