Re: good uv light meter ... But if the glasses are made from polycarbonate,...transmission....Absorption is proportional to some absorption factor times thickness ... (sci.optics)
Re: High R plastic ... explained the problems with polycarbonate.... They made a pair of glasses out ...money and time to try each one. ... Most progressive lenses have etchings that identify the lens manufacturer, ... (sci.med.vision)
Re: High R plastic ... where they explained the problems with polycarbonate....glasses out of what they referred to as high - R plastic that are great ...money and time to try each one. ... Most progressive lenses have etchings that identify the lens manufacturer, ... (sci.med.vision)
Re: Polycarbonate versus High Index Plastic (1.67) lens help! ... I just picked up a new pair of glasses from Lenscrafters. ...recommended Polycarbonate because it was apparently shatterproof etc ... My prescription is -5 and -5.25, so I think that's fairly high. ... (sci.med.vision)
Re: CR39 ... than my old glasses (even though the new frame is larger you can ... The optician I ... its hard to know for certain but polycarbonate is known for high ... the lenses being thinner. ... (sci.med.vision)
