It’s not a trick, if you’re wondering. There actually is something to see.

    • ElderWendigo@sh.itjust.works
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      11 months ago

      It’s funny you say that. I have astigmatism, but I learned to see these on demand before I got glasses to correct it. The tricks all involve getting your eyes to focus farther away than the actual image surface. I could easily see the butterfly while wearing my glasses. Then I read your comment and tried again without my glasses and I could still see something but it was no longer a cute butterfly. Without my glasses, it was an abyssal horror with wings unfolding from other wings in a vaguely butterfly configuration.

      • JGrffn@lemmy.world
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        11 months ago

        Do you need both eyes for this? One of my eyes is almost useless and also lazy, the other one has… Something, I don’t recall what, but it’s all blurry from up close and hard to focus. Guessing astigmatism. I don’t wear glasses.

        • ElderWendigo@sh.itjust.works
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          11 months ago

          Yes, it’s entirely dependent of tricking your eyes into changing their angle as if they are looking at something farther away than the image actually is.

    • silentknyght@lemmy.world
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      11 months ago

      Hmm. I used to be able to see these so easily, but that was such a long time ago and I’ve since had Lasik. I wonder if that changes things.