Rat with weird red eye

Question
I have a young hairless rat who i think might've had an eye infection. His eye was huge, though he could still close his eyelid over it. I'm not sure if it was the actual eye that was bigger or something behind it pushing it. There was pieces of white-ish slim in it, or almost like ribbons of skin would peel off the eye. I put in Fucithalmic drops for a few days, but when that didn't help, got stronger drops from the vet. The infection seems to have gone, and the eye isn't huge anymore. But his regular eye colour is black, and this eye is still red(not at all like an albino's red eye, but very un-clear) with an almost white inside. I know he will most likely never see out of it again. But also, it seems a bit smaller than normal and sticks out more. Like i can see all around it. And he shakes his head: i don't know if it has to do with the eye bothering him.
He eats fine and is very active. But is it normal for it to stay like that for the rest of his life? Does it hurt him? The infection is gone, but i don't know if i should to do something else about it.
I don't have a picture of it right now, but i can get one if you think that might help.
Thank you so much!
Joleen

Answer
 I can't tell you exactly what is wrong with the eye, as there are so many possible things it could be, but if it is no longer peeling or swelling and he is acting normal otherwise he may just be as good as he's going to get.  Usually a swollen eye indicates a virus or a tumor pressing inside the skull, but with the color change that would indicate something more specific to the eye itself.  I don't have much experience in eye problems in rats so I couldn't even give any suggestions, but if a vet has seen it they should be able to give you a better idea.  Shaking the head may indicate that it is painful or irritating; it's hard to say exactly if it is causing pain or not.  For now I would recommend you make a note of the eye or keep photos of it to check if it is getting worse or better, and having a vet examine it in its current state (if one hasn't already) would definitely be a good idea.  Well I wish I could have been more help, I hope your rat gets better soon!