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Medical Forum / General / Vision / August 2006Rimless Glasses
Are rimless glasses of 1.25 and 3.25 diopters in thinner plastic strong enough to withstand the rigors of daily use without breaking at the connecting points or should they be made of thicker plastic to hold up? Thanks >Are rimless glasses of 1.25 and 3.25 diopters in thinner plastic strong >enough to withstand the rigors of daily use without breaking at the >connecting points or should they be made of thicker plastic to hold up? TRIVEX is far and away the material of choice. n=1.67 aspheric plastic is second choice. polycarb is third choice. CR-39 is fourth choice. Other high-index plastic or glass are worst choices (I won't use them PERIOD). I read that where there is a difference in prescription for each eye the better eye will do the seeing to the extent that the person sees as good as the lowest prescription, ie better eye. With a 2 diopter difference is Riserman really seeing as well as a -1.25 or does the -3/25 eye complicate the picture? ps - I never really thought that argument stacked up to will be pleased to hear what experts think > I read that where there is a difference in prescription for each eye the > better eye will do the seeing to the extent that the person sees as good as [quoted text clipped - 5 lines] > ps - I never really thought that argument stacked up to will be pleased to > hear what experts think Philli The 3.25 diopters are for reading, the 1.25's are for driving. Wherever did you get the idea that they represent a difference between my left and right eyes? Do you have an answer to my original question? Thanks, Bob > Are rimless glasses of 1.25 and 3.25 diopters in thinner plastic strong > enough to withstand the rigors of daily use without breaking at the > connecting points or should they be made of thicker plastic to hold up? > > Thanks Unless you get smacked around a lot about the face and head, rimless glasses will hold up with daily use. |
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