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)?
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