1.70 white hi-index glass lens 1. Diameter: 65mm 2. Abble value 35.6 3. Transimission: over the 87% ... 4. Density(g/cm3) 1.70 white ... 1.70, uncoated & A/R, size 65/70 mm)2. CR-39 LENS (index 1.499, 1.56, 1.61, uncoated, ... , flat-top bifocal, blended bifocal and curve bifocal lens)4. PROGRESSIVE LENS. 1.70 asp white hi-index glass ...