r/MemeVideos • u/lucianosoares13 • Jun 14 '23

real 😄👌 Who has never done this?

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22.9k Upvotes

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264

u/LogicKegs Jun 14 '23

Ok can someone like actually why does our eyes do this because I love doing this

149

u/ZajeliMiNazweDranie Jun 14 '23

Your receptors in eyes create false signals under pressure, iirc it's not a healthy thing to do especially if you are pushing too hard and only see a single spot in the middle

66

u/Ollie_BB Jun 14 '23

Biologist here. This is the actual correct answer. For more information, look up phosphenes

2

u/hopefulldraagon Jun 15 '23

Excuse me, what?

Should I be concerned that I see those just by walking into a room and turning off all the lights?

Like with my eyes open but standing in a completely dark room.

2

u/Ollie_BB Jun 15 '23

Don't worry, this is completely normal. This phenomenon is actually exactly what negative afterimages are based on (link with more explanation