Whats the least fun fact you know?

StThicket@reddthat.com to Asklemmy@lemmy.ml – 168 points –
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Your eyes have โ€œimmune privilegeโ€ meaning your immune system effectively does not know they exist as it would attack them and make you go blind if it did.

Additional unfun fact, in case the implication goes by anyone; some few folks have discovered exactly how much it sucks when your immune system discovers your eyes and have, indeed, gone blind because of it :(

Meaning, if you ever get a cut in your eye, go to the doctor, or else you'll lose the eye.

My dog scratched his eye to the point of having an ulcer. Went to the emergency room ASAP ๐Ÿ’ธ

I was in the Army, and stabbed myself in the eye with so. Many. Branches. So much damage.

That was decades ago, and I'm not blind yet... what's the point at which it becomes a danger?

Actual penetration. When the outside touches anything inside the eye. Something poking the outside really really hard isn't going to introduce your antibodies to the inside of the eye.

The same applies to the testicles.

If your immune system discovers your testicles you'll go blind? Is that what happens if you masturbate too much?