• evujumenuk@lemmy.world
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    2 days ago

    Close one of your eyes. What you see through that closed eye is “nothing” since it’s not just blackness, but something entirely nonexistent.

      • jmcs
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        2 days ago

        Close just one eye and you’ll not even see your eyelid. You can test it by turning on your phone’s flashlight, closing your eyes, pointing it to one of them, and opening the other.

        • Björn Tantau@swg-empire.de
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          2 days ago

          Tested with an additional barrier between the eyes, I can still see the light. And by looking in the direction of the closed eye I can even see the red of the eyelid.

          Your brain may helpfully filter out the closed eye but you can still trick it to drop the filter.

      • FlihpFlorp@lemm.ee
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        2 days ago

        I’ve heard stories of truly blind people getting these visions of vivid colors

        I don’t remember where I read it so I’m not a reliable source but their minds made something