• plz1
    link
    English
    125 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
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      -1
      edit-2
      5 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.