Thanks everyone for the advice. His eye does not seem to be affecting him in anyway, he is still his same old self. I have decided not to take him to the vet simply becuase I worry about his age and something happening, our vet is about 45 min away so its a long drive.
Daisylover, I so wish I could get him a companion, but unfortunatly he was not fixed so it wouldn't be the best idea unless we want a huge for or some little bun buns!
As long as he doesn't seem any different, I won't worry about him. Thanks again everyone!