With such a weak prescription you will probably not see a difference in thickness and the CR-39 will give you better optics. I have has several pair of half frame lenes in CR-39 and my prescription is MUCH stronger than yours! On Sep 28, 1:51 am, vsg <[EMAIL PROTECTED]> wrote: > Hi, > Thanks for creating this group. Very helpful to read the forums. > Quick question: > I'm interested in buying a pair of half-rims from 39dollarglasses. > I'd like to get Transition lenses, but want to know people's opinion > on CR-39 versus polycarbonate. The cost of CR-39 transitions is ~$50, > and the cost of polycarbonate transitions is ~$90. For my > prescription (OD: -1, -1.5, 180; OS: -2), will CR-39's be unadvisable > for half-rims? Approximately how thick will they be compared to the > thickness of polycarbonates (for this prescription)? > > Thanks again!
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