... produce single vision, bifocal, progressive, photochromic(Grey, Brown), polarized(Grey, Brown and G-15), polycarbonate, tinted, RX lens(uncoated, hard coated, HMC ... form, HI-VEX lenses, with index of 1.499, 1.56, 1.60, 1.67, both in finished and semi-finished. At the same time, we have a ...