13 points
Alcohol has never affected my plastic lenses.
There are some plastics it affects, I’ve just never seen it affect glasses. Notably, the eyeglass cleaner kits at eyeglass shops are alcohol based.
4 points
Alcohol will affect acrylic/plexiglass, but its not necessarily a fast reaction. I don’t know what specific plastic glasses lenses are made of. Also, the UV coating might protect them from the alcohol.
6 points
Pulling this straight out of my ass but I think it’s likely to be polycarbonate
7 points
2 points