Alcohol would, too. Further, avoid mineral spirits and petroleum based solvents entirely.
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.
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.
Pulling this straight out of my ass but I think it’s likely to be polycarbonate