I dont have Prescription Lenses, but Since I am blind in my right eye, my eye doctor Prescribed Glasses with Poly-Carbonite lenses(Shatter proof), to help protect my one good eye. I got super light glasses, polycarbonite Lenses, and since I have to Wear them all the time, I also Got Transitions Lenses. Altogether they cost me $489!! Eeeekkk...but like hubby said, they will last me years, since they dont have a prescription lenses in them. But Glasses are so expensive it sucks!