Monkey gouged out eye in forest, details

Not with *no* medical aid, no. But if he had a way to pack the eye socket with something sterile (like gauze) and keep constant pressure on it, he might stand a chance.

There are more plants than leaves in the forest. Moss grows in dark, damp places and is absorbent.

You might want to do a google search for "survival first aid forest".

Also, check out this link: http://www.wilderness-survival.net/medicine-6.php

Spider webs have been used to slow bleeding and as makeshift bandages for centuries.

There actually probably wouldn't be very much bleeding. Depending on what we're talking about (did the monkey stab a stick into the eye and puncture it, or did he steal it by popping it out of the socket?). If it's the latter, then the man would surely live and there likely wouldn't be much bleeding. Sure, it's a socket and raw flesh holding the eyeball, but there aren't any major arteries inside. It'd be like ripping off a fingernail. It would hurt a heck of a lot, but he'd live no problem and walk okay.

It the monkey stabbed something into the eye, it'd be excurtiatingly painful, sure, but he'd live no problem. Same with the bleeding, as there aren't a lot of blood vessels in your eye. But if the monkey stabbed something through the ocular cavity and into the brain, then he'd be dead. But it would probably take quite a bit of force to puncture through.

No problemo. If you really want to go for authenticity, dealing with monkeys and men... if a monkey gets a hold of you (man), it'll rip off your balls. Second, bite off your face/nose.. Monkeys can do a lot of damage facial wise with how strong they are and I think they're often underestimated. Depending on how many monkeys you have ambushing your characters and their resources, you may want to review it.