this post was submitted on 11 Aug 2024
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[–] fan0m@lemmy.world 6 points 3 months ago (1 children)

Pulling this straight out of my ass but I think it’s likely to be polycarbonate

[–] Twitches@lemm.ee 7 points 3 months ago

I worked in optical it's polycarbonate. Can be a plastic called cr39 or it could be a high index lens if they have a very high prescription generally alcohol won't hurt it. If the frame is plastic the alcohol could potentially fog the plastic.