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[-] diverging@piefed.social 18 points 2 hours ago* (last edited 2 hours ago)

Because of this we have blind spots, one for each eye. They are not usually noticeable because 1) the blind spot of one eye can usually be seen by the other, and 2) the brain fills in the gap.

So with this I will perform a magic trick, I will make your thumb disappear: Close your left eye and with your right look at a spot in the background, make a thumbs up gesture and place the tip of your thumb on that spot, move your thumb to the the right continuing to look at the spot in the background, when your thumb moves about 15 cm your thumb should disappear.

You can use your left eye too, just switch the directions.

[-] Modern_medicine_isnt@lemmy.world 2 points 41 minutes ago

I couldn't make it work. But I did notice that the spot in the background changed focus a tiny bit at one point. I suspect my brain was tracking the thumb and simply refused to continue to truely focus on the background spot. I tried and tried, but just couldn't make it happen. Neither eye. :(

[-] I_Fart_Glitter@lemmy.world 6 points 30 minutes ago

Found the cephalopod

[-] clot27@lemmy.zip 1 points 25 minutes ago

What is a "spot in the background"? Like where exactly

[-] InvalidName2@lemmy.zip 10 points 2 hours ago

It's way too late at night for all those directions, somehow ended up creating my own blind spot by sticking my thumb in my bum.

[-] tacosanonymous@mander.xyz 1 points 16 minutes ago

At least your dick didn’t get stuck in the toaster.

[-] diverging@piefed.social 6 points 2 hours ago

Well, I guess your thumb disappeared.

I can try another way the blind spot is about 15 cm at arms length to the right of the right eyes center of vision. So put your thumb there and it should disappear

this post was submitted on 19 Aug 2025
186 points (100.0% liked)

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