hi holly, I would hate to think of a little fish called 'steve' being in distress. I know nothing about fish, ornamental or otherwise. I did find a website that is pretty comprhensive as to fish ailments and eye infections seem to be a big thing with them. The causes start with poor nutrition. You could be feeding him not enough or the wrong mix.
Here is the website:
www.aquaticcommunity.com/disease/eyeproblem
tick