30/07/2014
1.56 Photochromic Progressive Lens
Available Color: Grey/Brown
Fast dark, fast clear
Refraction index Nd=1.56
Diameter: 70/75mm
Corridor: Short & Regular
Abbe value: 38
Specific gravity: 1.28
High scratch resistance
35% thinner than CR-39 lens
HMC+EMI coating and Uv protection