"Your eyes have a separate immune system from the rest of your body. If they get damaged in such a way that it affects anything other than your eyes, your regular immune system can attack the damage and will not recognise them, meaning your own body can permanently blind you.

What's worse, your body cannot tell the difference between either eye. If one of them gets infected or damaged, your immune system can attack your healthy eye and take away your sight entirely."

"The origins of vampires as we know them.

Basically your body has gas build up when you die. I’m not medically inclined enough to explain why. Basically the gas has to escape somehow, and so it would pass through the vocal cords in the throat. This creates the low “moan” that makes the body sound as if it was in pain. The people back then had no idea what was happening and random bodies would just start “moaning” in pain. And thus they believed that the bodies were rising from the dead. And when stabbed, the gas escaped otherwise. Thus leading to the belief that the only way to stop a vampire was to stab a dead body in the chest. This also led to a lot of strange burials, I.e the man that was buried in a stone wall to prevent him from rising from the dead.

I can’t really blame them. I’d be freaked out too if a corpse suddenly started to make sounds. Creepy for some, but I find stuff like that fascinating. There’s documentaries on YT talking about it. I highly recommend them!"