Round Top Bifocal Lens 1.499 1.56 finished & semi finished 70/28 70/24 UC HC HMC ... form, HI-VEX lenses, with index of 1.499, 1.56, 1.60, 1.67, both in finished and semi-finished ... service to you.Round Top Bifocal Lens 1.499 1.56 1.60 Round Top Bifocal Lens