Since I have no experience with sick fish and with using any commercial medications, I wouldn't want to give you some misleading advice about medicating your fish. Hopefully someone else will be able to help you (Gunnie, Carol ? LOL). So, you are sure that it's a Cloudy Eye disease, right? Even for someone to help you here, you need to be sure you identified disease correctly in order to treat it successfully. (And identification is often difficult from what I read here and there, so
hopefully you identified it correctly.)
Why do you think salt treatment is out of question? Often times it is much safer and much more effective than most commercial medications. But once again, I have not seen your fish, therefore I cannot say which treatment would be better. Let us wait for someone to give us a hand here

I hope your fish gets well.