Finished&Semi Finished UC HC HMC EMI avaliable Flat Top Bifocal Lens Index: 1.499 1.56 1.60 Diameter: ... (uncoated, hard coated, HMC, EMI, Super Hydrophobic) including free form, HI-VEX lenses, with index of 1.499, 1.56, 1 ... the opportunity to demonstrate our quality service to you. Flat Top Bifocal Lens 1.499 1.56 1.60