this post was submitted on 25 Aug 2025
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Science Memes

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[โ€“] Zorsith@lemmy.blahaj.zone 106 points 10 months 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 10 months ago (2 children)
[โ€“] DeathsEmbrace@lemmy.world 39 points 10 months 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 10 months 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 10 months ago (1 children)

What is this tiny barrier called and where is it?

[โ€“] DeathsEmbrace@lemmy.world 28 points 10 months ago* (last edited 10 months 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 10 months ago

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

[โ€“] Taleya@aussie.zone 18 points 10 months ago

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

[โ€“] rockerface@lemmy.cafe 9 points 10 months ago

New phobia unlocked

[โ€“] bennypr0fane@discuss.tchncs.de 1 points 10 months ago (1 children)

What? Why would the immune system attack the eyes?

[โ€“] Schmoo@slrpnk.net 7 points 10 months 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.