At first I was afraid this was going to be one of those videos where Chinese officials were torturing somebody, but those guys are actually trying to help him.
As bad as this looks, his eyes are probably ok. He probably had some kind of eye infection with smelly goop forming in it and a fly laid eggs in it,
I bet he wasn't able to clean or take care of himself because they have grown so big they are literally falling out, you have to wonder why he didn't just wash them out with a rag?
This kind of thing can happen to dogs and other animals also, had a neighbor whose dog got like this and he rushed him to the vet, his eyes were just fine afterward.
And there are innumerable cases of a fly laying eggs in someone's ear while they were sleeping, but in that kind of thing it's so painful once they start crawling around on your eardrum that you go to seek help right away before they reach any size, and they just flush them out.
Then you have guys (and women!) who deliberatly put them on their dick and asshole and in their pussy because they like the sensation of them crawling around. Check out motherless.com for such things, one nasty fuck there even lets them clean all the smegma off his dick on a regular basis and films it.