this post was submitted on 25 Aug 2025
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Science Memes

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[โ€“] Zorsith@lemmy.blahaj.zone 105 points 1 week ago (4 children)

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

[โ€“] Karjalan@lemmy.world 50 points 1 week ago (2 children)
[โ€“] DeathsEmbrace@lemmy.world 38 points 1 week ago (2 children)

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.

[โ€“] T156@lemmy.world 12 points 1 week ago

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.

[โ€“] icelimit@lemmy.ml 11 points 1 week ago (1 children)

What is this tiny barrier called and where is it?

[โ€“] DeathsEmbrace@lemmy.world 28 points 1 week ago* (last edited 1 week ago)

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

[โ€“] zerodawn@leaf.dance 8 points 1 week ago

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

[โ€“] Taleya@aussie.zone 18 points 1 week ago

As someone living with an eye injury, this is a deep seated fear.

[โ€“] rockerface@lemmy.cafe 8 points 1 week ago

New phobia unlocked

[โ€“] bennypr0fane@discuss.tchncs.de 1 points 1 week ago (1 children)

What? Why would the immune system attack the eyes?

[โ€“] Schmoo@slrpnk.net 7 points 1 week ago

Our immune system is trained how to differentiate between what is supposed to be there and what isn't 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. That's why if it ever enters the bloodstream it can trigger an immune response.