Round Top Bifocal Lens 1.499 1.56 finished & semi finished 70/28 70/24 UC HC HMC ... produce single vision, bifocal, progressive, photochromic(Grey, Brown), polarized(Grey, Brown and G-15), polycarbonate, tinted, RX lens(uncoated, hard coated, HMC ... , EMI) including free form, HI-VEX lenses, with index of 1.499, 1.56, 1.60, 1.67, both in ...