1.56 photochromic optical lens

1.56 photochromic optical lens transition lens, photochromic 1) Index=1.56 (CR-39/1.499, 1.59PC, 1.61, 1.67,1.74 are all available) 2) Max Diameter: 70mm 4) Changing color quickly 5) HC, HMC, UC, UV protection, hydrophobic available 6) Single vision, progressive ,transition(photochromic) ,polarized available 7) Feature: Thinner and lighter than spherical lens. 8)High transmittance, stable color and Precise design. 9)Available color: gray 10)provide RX hi-cylinder lens we also provide polarized optical lens, progressive lens, and RX hi-cylinder lens registered with FDA and CE