• fan0m@lemmy.world
    link
    fedilink
    arrow-up
    5
    ·
    3 months ago

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

    • Twitches@lemm.ee
      link
      fedilink
      arrow-up
      7
      ·
      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.