Paul wrote: > > I bought that exact [rimless] frame from Zenni, and replaced the vinyl nose > pads > with silicone to get an extremely light and comfortable pair for > computer use. (The pads didn't make that much difference, but silicone > is nicer and there's no chemical hazard.) They worked fine for quite a > few months, but then they broke in the middle.
I think opticals, both online and local, are all taking some blame for the intrinsic crappiness of rimless and half-rim frames. Such frames are all needlessly fragile, all structurally unsound, and all way better at making people have to replace glasses frequently than they are at correcting vision. The optical retailers are only to blame for offering this junk to begin with-- but it's not their fault that such insubstantial frames are junky. It's just the nature of an incomplete frame to be weak and troublesome. Would an astronomer make a telescope by drilling holes in lenses and connecting the holes together with wire? Would he use fishing line as a structural element of his instruments? No, he would not, because that would be dumb. Glasses _frames_ are supposed to be just that. The lenses are optical elements and should not be required to function as frames. Confusing the two functions is one of the factors that gave us pervasive use of polycarbonate-- which is plenty strong and tough, but a terrible optical material that should never be used as a lens when visual quality is important. Anyway, folks can save themselves the trouble of rickety and unreliable glasses by just using full-rim designs made from proven metals or plastics. Then they should use lens materials for their optical qualities and not their mechanical qualities. Chalo --~--~---------~--~----~------------~-------~--~----~ Check us out at the oft-updated http://glassyeyes.blogspot.com! You received this message because you are subscribed to the Google Groups "GlassyEyes" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/glassyeyes?hl=en -~----------~----~----~----~------~----~------~--~---
