chaospatterns@lemmy.world
on 25 Aug 03:33
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Thatās also why certain contact lenses canāt be worn overnight or for long periods of time because they arenāt as breathable. At least thatās what my eye doctor said when I got them.
Thatās correct. Itās 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).
LikeableLime@piefed.social
on 25 Aug 06:07
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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.
Kind of. This happened to me. My vision was noticeably bad when I was diagnosed with it, but once I started taking care of my eyes, they blood vessels shriveled and shrank, and my vision mostly improved to the point where I didnāt notice it anymore.
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.
Wtf is going on with this timeline? First we have chess masters using their anusās to cheat. Then sticking a finger in your butt can fix abnormal heart rythms. And now weāre going to find out that numerous of our top athletes all cheat by wearing butt plugs that release oxygen into their bowles.
SmoothOperator@lemmy.world
on 26 Aug 06:24
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Wait till you hear about how fecal transplants can make you braver
jodanlime@midwest.social
on 25 Aug 03:55
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They donāt need oxygen when Iām sleeping?
Catoblepas@piefed.blahaj.zone
on 25 Aug 04:12
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You have a high concentration of blood vessels on the inside of your eyelids, which are kept in contact with the cornea by tears. It doesnāt only let oxygen through, some parts of blood (like lymph and antibodies) can also travel through the tears and into your cornea.
fuckwit_mcbumcrumble@lemmy.dbzer0.com
on 25 Aug 04:13
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It is the only part of the body without a blood supply. Instead, it receives nutrients via aqueous humor (the liquid between the cornea and vitreous).
Instead, oxygen dissolves inĀ tearsĀ and then diffuses throughout the cornea to keep it healthy.[5]Ā Similarly, nutrients are transported viaĀ diffusionĀ from the tear fluid through the outside surface and theĀ aqueous humourĀ through the inside surface.
And because that seemed lacking still and Iām too dumb to figure it out ChatGPTās response:
TheĀ palpebral conjunctival blood vesselsĀ and theĀ capillaries of the eyelidsĀ supply oxygen to the tear film behind closed lids. Oxygen diffuses from these vessels into the cornea.
DeathsEmbrace@lemmy.world
on 25 Aug 12:32
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Hereās 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 āfindā 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.
Itās like the brain. Thereās 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.
Our immune system is trained how to differentiate between what is supposed to be there and what isnāt only on things floating around in the blood. Certain parts of the human body - like the liquids inside our eyes - are permanently isolated from the bloodstream, and so our immune system will never have encountered anything like it. Thatās why if it ever enters the bloodstream it can trigger an immune response.
no no no, they also gets oxygen supply from the back of your eyelids (and also oxygen dissolved in you tears). otherwise youād have to keep your eyes open when you sleep.
meme_historian@lemmy.dbzer0.com
on 25 Aug 07:07
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So like ā¦ Swim goggles will suffocate my eyes? š¦
hovercat@lemmy.blahaj.zone
on 25 Aug 13:24
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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
angrystego@lemmy.world
on 25 Aug 09:18
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buggybug@sh.itjust.works
on 25 Aug 14:16
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i came, i saw, i absorbed oxygen directly from the air
glowing_hans@sopuli.xyz
on 25 Aug 16:31
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read it up on cornea wikipedia, seems to be true :o
Instead, oxygen dissolves in tears and then diffuses throughout the cornea to keep it healthy.[5] Similarly, nutrients are transported via diffusion from the tear fluid through the outside surface and the aqueous humour through the inside surface.
TacoButtPlug@sh.itjust.works
on 26 Aug 00:02
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What about buttholes?
fossilesque@mander.xyz
on 26 Aug 01:06
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Lasic surgery first cuts the cornea leaving a little flap. The doc peals the eyeball then they shoot a laser beam in various places in a pattern to ablate the lens.
Then they put the flap back over like nothing happened, but that flat will never heal. That is why I will not be getting lasic thank you.
Kimjongtooill@sh.itjust.works
on 26 Aug 02:31
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SMILE uses laproscopy, so the slit is only 3mm instead of 20mm for LASIK. Supposedly like a 3 day recovery time or maybe 2.
Thereās a new thing where they have been able to reshape the lens by first acidifying it, then returning it to normal after massaging it into a new shapeā¦ Rabbit eyes so far, not humanā¦ Because rabbits canāt scream likeā¦likeā¦like they were reshaping their eyeballs with acid.
This reminds me of my families collective trauma, the summer of screaming bunnies!
We had our cat and her new litter of 3 kittens go out into our wooded acre property that was heavily populated by bunniesā¦was. Their first summer was āactiveā. We tried to save the first 12 or so but by the second week of July we just numbly listened to the cries while trying to eat dinner. Fun times. Miss those cats though, even if they were murder hobos
when you say lens, do you mean cornea? i thought most myopia, hyperopia, and astigmatism was caused by problems with the shape of the cornea.
ok, i looked up this treatment, and it says āanimal tissue testsā, not āanimal testsā, so i suspect the rabbits are long past the point of being bothered :|
Lol, they all say that, but when you read the fine printā¦āyes, the cornea does heal after LASIK. While the corneal flap may not fully āhealā in the sense of becoming completely indistinguishable from the surrounding tissue, it does reattach and become very stable.ā
Itās like getting penis enlargement surgery buy then you get a warning afterwardsā¦ It will fully heal, but just donāt yank it too hard or hang from it for prolonged periods greater than half a second with a force equal or greater than 10 pounds. Levitra will also enlarge your left ear, which you should have trimmed to size every month by your local veterinarianā¦ WTF! No, my eyes are not little meat DSLR cameras to go mess around with. So I donāt share the enthusiasm others do. I may indeed need a surgery in the future, but Iāll postpone it.
Soooo, itās like a little scar that nobody will notice?
tigeruppercut@lemmy.zip
on 26 Aug 13:37
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This is the first Iāve heard of the eye flap healing being the issue with lasik. I always thought it was the fact that they can only take off just a bit of your lens with the lasers, and then if that continues to change shape as you age (which is common to normal aging eye issues), they canāt go back and shoot more lasers because your lens has already become too thin from the earlier surgery.
I meant it more towards the value. Like your legs are not like a tableās legsā¦yes both do similar things but your legs are much more singularity important to yourself than a tableās legs.
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.
Curious, I definately forgot to take it my contacts from time to time and it isnāt fun waking up in them(though being able to see probably is kinda fun until you feel the discomfort anyways). Im curious about the whole process now, Iām going to try and find out more about this, wish me luck!
Meanwhile I still canāt breathe through my arsehole
Swedneck@discuss.tchncs.de
on 29 Aug 10:29
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skill issue
WhatGodIsMadeOf@feddit.org
on 26 Aug 21:12
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Also little known fact, balls are actually eyeballs. Back in the earlier days of evolution you could still see with them. Itās also where the term 4 eyes comes from.
BigBananaDealer@lemmy.world
on 27 Aug 00:36
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its how we used to be able to tell if we wiped enough
ladies had to get a friend to help them thats why that whole women going to the bathroom together thing came from. because they dont have balls. sadly
threaded - newest
Thatās also why certain contact lenses canāt be worn overnight or for long periods of time because they arenāt as breathable. At least thatās what my eye doctor said when I got them.
Thatās correct. Itās 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).
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 didnāt see that coming
E is for eye A is for are Y is for you
Eayyyyyyy
Kind of. This happened to me. My vision was noticeably bad when I was diagnosed with it, but once I started taking care of my eyes, they blood vessels shriveled and shrank, and my vision mostly improved to the point where I didnāt notice it anymore.
100% recovered, no. But better.
Oh damn, did not know that was a risk
Thatās crazy
So what youāre saying is, my eyes are also lungs?
He was out of breath.
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.
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 Iām not just blowing hot air up your butt, except maybe I am: science.org/ā¦/mammals-can-breathe-through-their-iā¦
Makes some sense. If it can absorb nutrients, it can probably absorb gases too.
Wtf is going on with this timeline? First we have chess masters using their anusās to cheat. Then sticking a finger in your butt can fix abnormal heart rythms. And now weāre 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
Page not found
Made a change to the link, let me know if that works for you.
Works, thanks!
They donāt need oxygen when Iām sleeping?
You have a high concentration of blood vessels on the inside of your eyelids, which are kept in contact with the cornea by tears. It doesnāt only let oxygen through, some parts of blood (like lymph and antibodies) can also travel through the tears and into your cornea.
And because that seemed lacking still and Iām too dumb to figure it out ChatGPTās response:
My brother sleeps with his eyes party open. He must be eye oxygenmaxxing. Superior eyeballs.
Surely the oxygen and carbon dioxide also diffuse through the aqueus humor and surrounding sclera.
How does it not get damaged if weāre asleep and our eyes are closed?
Tear fluid also provides oxygen
Also your immune system will attack your eyes if it knows theyāre there. Eyes are weird.
Well thatās just terrifying
Hereās 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 āfindā 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.
What is this tiny barrier called and where is it?
Thereās multiple but the one Iām talking about is corneal epithelium. biologyinsights.com/immune-system-eyes-mechanismsā¦
Edit:it can trigger an immune response
Itās like the brain. Thereās 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.
Itāll do the same to a manās balls, too
As someone living with an eye injury, this is a deep seated fear.
New phobia unlocked
What? Why would the immune system attack the eyes?
Our immune system is trained how to differentiate between what is supposed to be there and what isnāt only on things floating around in the blood. Certain parts of the human body - like the liquids inside our eyes - are permanently isolated from the bloodstream, and so our immune system will never have encountered anything like it. Thatās why if it ever enters the bloodstream it can trigger an immune response.
no no no,they also gets oxygen supply from the back of your eyelids (and also oxygen dissolved in you tears). otherwise youād have to keep your eyes open when you sleep.edit: to correct inaccurate statements.
So thatās why weāre not supported to open our eyes under water. Our eyeballs are suffocating!
If our eyes can absorb oxygen from tears then they can certainly do so when submerged provided the water is sufficiently oxygenated.
The body is crazy. But I reckon they could survive for a while without air anyways, right?
speak for yourself
So like ā¦ Swim goggles will suffocate my eyes? š¦
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
<img alt="" src="https://lemmy.world/pictrs/image/6c2666aa-e539-40d8-b18a-b38abebaf0df.jpeg">
Quit using up all the oxygen.
Itās mine, I saw it first!
heavy breathing
Skin breathes too.
Source?
Mostly ocean flora but thereās a lot that comes from the Amazon rainforest too.
Some biology science magazine years ago. Googling gives mixed results. At least the upper skin cells do breathe directly.
Iāll update the text.
Yep, but thatās not even close to 10%.
today I learned
i came, i saw, i absorbed oxygen directly from the air
read it up on cornea wikipedia, seems to be true :o
What about buttholes?
Theyāre just full of shit.
They do have blood, as any ER doc could tell you.
However, they can also breathe in a manner of speaking. Enough that itās proposed as a possible method to keep someone alive if their lungs donāt work.
I honestly did not expect this answer.
he loves to breathe the oxygen
Wait, so what are the bliod vein things in the eyes if not supplying the eyes
They supply the rest of the eye. Itās just the transparent bit on front that doesnāt get much of anything.
how come when I donāt blink it hurts and my eyes get red?
It means youāre stoned af and forgot to blink
Too much oxygen to the eyes.
your eyes need to be both moist and oxygenated, the former usually requires blinking
Have you ever tried to breathe in a moving car?
Too much air is bad for you, dingus.
With the windows down.
ok man relax, didnāt mean to offend you. just askingā¦
Sorry, my pet fish wrote that. He is an extreme, anti-air radical terrorist.
Lasic surgery first cuts the cornea leaving a little flap. The doc peals the eyeball then they shoot a laser beam in various places in a pattern to ablate the lens.
Then they put the flap back over like nothing happened, but that flat will never heal. That is why I will not be getting lasic thank you.
SMILE uses laproscopy, so the slit is only 3mm instead of 20mm for LASIK. Supposedly like a 3 day recovery time or maybe 2.
Also, does it really never heal?
Hmm I gotta look into that. Yup never heals.
Thereās a new thing where they have been able to reshape the lens by first acidifying it, then returning it to normal after massaging it into a new shapeā¦ Rabbit eyes so far, not humanā¦ Because rabbits canāt scream likeā¦likeā¦like they were reshaping their eyeballs with acid.
Unfun fact: Rabbits actually can scream, I have had the misfortune of hearing it. Itās not a sound you forget.
Oh thatās terrible.
This reminds me of my families collective trauma, the summer of screaming bunnies!
We had our cat and her new litter of 3 kittens go out into our wooded acre property that was heavily populated by bunniesā¦was. Their first summer was āactiveā. We tried to save the first 12 or so but by the second week of July we just numbly listened to the cries while trying to eat dinner. Fun times. Miss those cats though, even if they were murder hobos
when you say lens, do you mean cornea? i thought most myopia, hyperopia, and astigmatism was caused by problems with the shape of the cornea.
ok, i looked up this treatment, and it says āanimal tissue testsā, not āanimal testsā, so i suspect the rabbits are long past the point of being bothered :|
I think youāre right.
eyecenteroftexas.com/ā¦/does-corneal-flap-heal-lasā¦
Why does this article from 2019 say otherwise?
Lol, they all say that, but when you read the fine printā¦āyes, the cornea does heal after LASIK. While the corneal flap may not fully āhealā in the sense of becoming completely indistinguishable from the surrounding tissue, it does reattach and become very stable.ā
Itās like getting penis enlargement surgery buy then you get a warning afterwardsā¦ It will fully heal, but just donāt yank it too hard or hang from it for prolonged periods greater than half a second with a force equal or greater than 10 pounds. Levitra will also enlarge your left ear, which you should have trimmed to size every month by your local veterinarianā¦ WTF! No, my eyes are not little meat DSLR cameras to go mess around with. So I donāt share the enthusiasm others do. I may indeed need a surgery in the future, but Iāll postpone it.
Soooo, itās like a little scar that nobody will notice?
This is the first Iāve heard of the eye flap healing being the issue with lasik. I always thought it was the fact that they can only take off just a bit of your lens with the lasers, and then if that continues to change shape as you age (which is common to normal aging eye issues), they canāt go back and shoot more lasers because your lens has already become too thin from the earlier surgery.
Glasses/contacts offer better vision, no risk, and an easy solution to your eyes continuing to change.
actually thatās a much more apt metaphor than you seem to be comfortable admitting
I meant it more towards the value. Like your legs are not like a tableās legsā¦yes both do similar things but your legs are much more singularity important to yourself than a tableās legs.
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.
Curious, I definately forgot to take it my contacts from time to time and it isnāt fun waking up in them(though being able to see probably is kinda fun until you feel the discomfort anyways). Im curious about the whole process now, Iām going to try and find out more about this, wish me luck!
Your eyedoctor can show you the capillaries in question next time you get your script renewed.
Oh I had laser eyes installed, but good to know about when I get older if they donāt stop working as good. Thanks
Meanwhile I still canāt breathe through my arsehole
skill issue
Also little known fact, balls are actually eyeballs. Back in the earlier days of evolution you could still see with them. Itās also where the term 4 eyes comes from.
its how we used to be able to tell if we wiped enough
ladies had to get a friend to help them thats why that whole women going to the bathroom together thing came from. because they dont have balls. sadly