They’re just regular (prescription) glasses. The sky looks normal through them. What’s the deal?

  • hperrin@lemmy.world
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    16 hours ago

    Some coating on the glass is very faintly purple. Could be UV protection, anti glare, anti fog, etc.

    Glass itself is very faintly green, so it’s not the color of the glass, unless they are made out of some other material (something like polycarbonate or sapphire).