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Comments

• altphoto@lemmy.today ⁨2⁩ ⁨hours⁩ ago

  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.

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  • Nikls94@lemmy.world ⁨18⁩ ⁨minutes⁩ ago

    eyecenteroftexas.com/…/does-corneal-flap-heal-las…

    Why does this article from 2019 say otherwise?

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  • Kimjongtooill@sh.itjust.works ⁨1⁩ ⁨hour⁩ ago

    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?

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• nialv7@lemmy.world ⁨23⁩ ⁨hours⁩ ago

  no no no, they gets oxygen supply from the back of your eyelids mostly. otherwise you’d have to keep your eyes open when you sleep.

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• IzzyJ@lemmy.world ⁨2⁩ ⁨hours⁩ ago

  Wait, so what are the bliod vein things in the eyes if not supplying the eyes

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• Zorsith@lemmy.blahaj.zone ⁨23⁩ ⁨hours⁩ ago

  Also your immune system will attack your eyes if it knows they’re there. Eyes are weird.

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  • Karjalan@lemmy.world ⁨18⁩ ⁨hours⁩ ago

    Well that’s just terrifying

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    • zerodawn@leaf.dance ⁨4⁩ ⁨hours⁩ ago

      It’ll do the same to a man’s balls, too

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    • DeathsEmbrace@lemmy.world ⁨15⁩ ⁨hours⁩ ago

      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.

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  • rockerface@lemmy.cafe ⁨12⁩ ⁨hours⁩ ago

    New phobia unlocked

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• chaospatterns@lemmy.world ⁨1⁩ ⁨day⁩ ago

  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.

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  • LikeableLime@piefed.social ⁨22⁩ ⁨hours⁩ ago

    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.

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    • 0xD@infosec.pub ⁨21⁩ ⁨hours⁩ ago

      Forever?

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    • CybranM@feddit.nu ⁨19⁩ ⁨hours⁩ ago

      Oh damn, did not know that was a risk

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  • RejZoR@lemmy.ml ⁨23⁩ ⁨hours⁩ ago

    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).

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• angrystego@lemmy.world ⁨18⁩ ⁨hours⁩ ago

  Image

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  • phoenixz@lemmy.ca ⁨4⁩ ⁨hours⁩ ago

    • heavy breathing *

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  • Hugin@lemmy.world ⁨11⁩ ⁨hours⁩ ago

    Quit using up all the oxygen.

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• meme_historian@lemmy.dbzer0.com ⁨21⁩ ⁨hours⁩ ago

  So like … Swim goggles will suffocate my eyes? 😦

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  • hovercat@lemmy.blahaj.zone ⁨14⁩ ⁨hours⁩ ago

    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

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• thatradomguy@lemmy.world ⁨2⁩ ⁨hours⁩ ago

  how come when I don’t blink it hurts and my eyes get red?

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  • REDACTED@infosec.pub ⁨40⁩ ⁨minutes⁩ ago

    It means you’re stoned af and forgot to blink

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• buggybug@sh.itjust.works ⁨13⁩ ⁨hours⁩ ago

  i came, i saw, i absorbed oxygen directly from the air

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• glowing_hans@sopuli.xyz ⁨11⁩ ⁨hours⁩ ago

  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.

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• spongebue@lemmy.world ⁨1⁩ ⁨day⁩ ago

  So what you’re saying is, my eyes are also lungs?

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  • Sterile_Technique@lemmy.world ⁨23⁩ ⁨hours⁩ ago

    More like a giant alveolus. But inside out. With a giant sphincter in the middle. That poops light.

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    • spongebue@lemmy.world ⁨22⁩ ⁨hours⁩ ago

      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

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  • frezik@lemmy.blahaj.zone ⁨11⁩ ⁨hours⁩ ago

    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: science.org/…/mammals-can-breathe-through-their-i…

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  • shalafi@lemmy.world ⁨23⁩ ⁨hours⁩ ago

    He was out of breath.

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• MonkderVierte@lemmy.zip ⁨17⁩ ⁨hours⁩ ago

  10% of our regular oxygen intake is through the skin.

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  • bleistift2@sopuli.xyz ⁨15⁩ ⁨hours⁩ ago

    Source?

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    • Donkter@lemmy.world ⁨13⁩ ⁨hours⁩ ago

      Mostly ocean flora but there’s a lot that comes from the Amazon rainforest too.

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• toeblast96@sh.itjust.works ⁨3⁩ ⁨hours⁩ ago

  he loves to breathe the oxygen

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• TacoButtPlug@sh.itjust.works ⁨4⁩ ⁨hours⁩ ago

  What about buttholes?

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  • T156@lemmy.world ⁨2⁩ ⁨hours⁩ ago

    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.

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    • Tikiporch@lemmy.world ⁨14⁩ ⁨minutes⁩ ago

      I honestly did not expect this answer.

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  • fossilesque@mander.xyz ⁨3⁩ ⁨hours⁩ ago

    They’re just full of shit.

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• 7eter@feddit.org ⁨16⁩ ⁨hours⁩ ago

  today I learned

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• jodanlime@midwest.social ⁨1⁩ ⁨day⁩ ago

  They don’t need oxygen when I’m sleeping?

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  • fuckwit_mcbumcrumble@lemmy.dbzer0.com ⁨23⁩ ⁨hours⁩ ago

    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 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.

    And because that seemed lacking still and I’m too dumb to figure it out ChatGPT’s response:

    The palpebral conjunctival blood vessels and the capillaries of the eyelids supply oxygen to the tear film behind closed lids. Oxygen diffuses from these vessels into the cornea.

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  • dingus@lemmy.world ⁨13⁩ ⁨hours⁩ ago

    My brother sleeps with his eyes party open. He must be eye oxygenmaxxing. Superior eyeballs.

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  • Catoblepas@piefed.blahaj.zone ⁨23⁩ ⁨hours⁩ ago

    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 doesn’t only let oxygen through, some parts of blood (like lymph and antibodies) can also travel through the tears and into your cornea.

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• whosepoopisonmybutt@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

  Surely the oxygen and carbon dioxide also diffuse through the aqueus humor and surrounding sclera.

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• individual@toast.ooo ⁨21⁩ ⁨hours⁩ ago

  speak for yourself

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• Gork@sopuli.xyz ⁨23⁩ ⁨hours⁩ ago

  How does it not get damaged if we’re asleep and our eyes are closed?

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  • hancock@retrolemmy.com ⁨3⁩ ⁨hours⁩ ago

    Tear fluid also provides oxygen

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• InternetCitizen2@lemmy.world ⁨1⁩ ⁨day⁩ ago

  That’s crazy

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