• plz1@lemmy.world
    link
    fedilink
    English
    arrow-up
    12
    ·
    7 months ago

    I thought it was a coating, like what they use to filter UV light. I have Theraspecs that do it, but those are sunglasses.

    • hperrin@lemmy.world
      link
      fedilink
      arrow-up
      3
      arrow-down
      2
      ·
      edit-2
      7 months ago

      If it’s a UV filter, they should call it a UV filter, not a blue light filter. If it doesn’t filter blue light, then it’s not a blue light filter.