436
๐๏ธ๐ฝ๐๏ธ
(mander.xyz)
So if you sleep for too long you go blind?
No, the capillaries on your eyelids supply o2.
If you fall asleep with contacts on or wear them too long, blocking the supply of O2, you will grow capillaries infront of your cornea. This is bad for vision.
Wait, so what are the bliod vein things in the eyes if not supplying the eyes
They supply the rest of the eye. It's just the transparent bit on front that doesn't get much of anything.
how come when I don't blink it hurts and my eyes get red?
your eyes need to be both moist and oxygenated, the former usually requires blinking
Too much oxygen to the eyes.
What about buttholes?
They do have blood, as any ER doc could tell you.
However, they can also breathe in a manner of speaking. Enough that it's proposed as a possible method to keep someone alive if their lungs don't work.
They're just full of shit.
i came, i saw, i absorbed oxygen directly from the air
~~no no no,~~ they also gets oxygen supply from the back of your eyelids (and also oxygen dissolved in you tears). otherwise you'd have to keep your eyes open when you sleep.
edit: to correct inaccurate statements.
So that's why we're not supported to open our eyes under water. Our eyeballs are suffocating!
Quit using up all the oxygen.
he loves to breathe the oxygen
Also your immune system will attack your eyes if it knows they're there. Eyes are weird.
As someone living with an eye injury, this is a deep seated fear.
Well that's just terrifying
It'll do the same to a man's balls, too
Here's how fucked up it is imagine the only difference between having eyes and not having eyes is one tiny small area that if it breaks at any moment the immune system can "find" your eyes which is why eye damage needs to be treated right away. One tiny barrier keeps your eyes from being identified and if that breaks your worst nightmare.
It's like the brain. There's a tiny barrier that keeps the immune system out of it, and it breaking down is thought to be the cause of a few major brain conditions.
What is this tiny barrier called and where is it?
There's multiple but the one I'm talking about is corneal epithelium. https://biologyinsights.com/immune-system-eyes-mechanisms-of-ocular-protection/
Edit:it can trigger an immune response
New phobia unlocked
So like ... Swim goggles will suffocate my eyes? ๐ฆ
Eventually, yeah. I had an issue with contacts when I was younger as I have to wear thick toric lenses, which allow very little oxygen through. I would wear them way too long, and I was warned that continuing to do so could cause eventually cause blindness
That's also why certain contact lenses can't be worn overnight or for long periods of time because they aren't as breathable. At least that's what my eye doctor said when I got them.
Yep and if you wear them for too long your body will grow new blood vessels to supply your oxygen-starved eyes with what they need. These new blood vessels can cover your retina and can lead to blindness.
Learned that one by sleeping in daily disposable contacts for a while and losing a significant portion of my peripheral vision.
Forever?
Yup!
Bet you didn't see that coming
Oh damn, did not know that was a risk
That's correct. It's generally recommended for lenses to have at least over 100 Dk/t for sleep and they need to be approved for that. Dk/t is the measured oxygen transmission through the lens material, the higher, the better. I would not recommend lenses with Dk/t of 30 and under even for daily wear as they starve eyes of oxygen. Especially since there are very affordable ones with very high Dk/t like Miru and Biofinity (around 160 iirc).
10% of our regular oxygen intake is through the skin.
Source?
Mostly ocean flora but there's a lot that comes from the Amazon rainforest too.
today I learned
So what you're saying is, my eyes are also lungs?
Fun fact: your intestines are also lungs. Or maybe more accurately, lungs evolved from intestines. It turns out, you can oxygenate people by sticking an oxygen supply up their ass. Which is a possible treatment for people who have suffered respiratory failure.
Proof that I'm not just blowing hot air up your butt, except maybe I am: https://www.science.org/content/article/mammals-can-breathe-through-their-intestines
Wtf is going on with this timeline? First we have chess masters using their anus's to cheat. Then sticking a finger in your butt can fix abnormal heart rythms. And now we're going to find out that numerous of our top athletes all cheat by wearing butt plugs that release oxygen into their bowles.
Wait till you hear about how fecal transplants can make you braver
Makes some sense. If it can absorb nutrients, it can probably absorb gases too.
More like a giant alveolus. But inside out. With a giant sphincter in the middle. That poops light.
Boy, after getting a notification with this reply I had a hell of a time trying to figure out what I could have possibly said to spur it
Be careful the questions you throw into the void.
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this post was submitted on 25 Aug 2025
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