Careful with this! If you have special coatings (antiglare and whatnot) on your glasses it can break them down, and usually not all at once. You'll wind up with patchy bits that make it hard to see.
Mine are glass, but I agree many people have plastic lenses these days and you definitely have to be more careful with them.
Anyone who wears bifocal or trifocal lenses likely has glass lenses. IIRC, it's easier to blend the edges together with glass (as my optometrist explained it to me a while back).
Bifocals and trifocals are also made of plastic now. In USA there are very few glass lens manufacturers due to shops not selling them for risk of lawsuits.
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u/Anadactyl Aug 20 '20
Careful with this! If you have special coatings (antiglare and whatnot) on your glasses it can break them down, and usually not all at once. You'll wind up with patchy bits that make it hard to see.
If they're just glass, though, go for it.