... 1.50 1.56 1.60 and 1.67 Semi-finished lens 2.Diameter: 60m5,70mm,75mm 3. ... Well designed base curve Semi-finished lens(Optical lens)Index: 1.49, 1. ... 70/24mm)Flat top: (70/28m, 70/30mm).Progressive semi-finished:Diameter 75mm, short corridor 14mm, Regular corridor 17mm ... ,bifocal lens,progressive lens,polarized lens,photochromic lens,PC lens,free form…To be ready forTomorrow’s ...