The clouded eye is from a eye injury if it appeared out of the blue over night. Left untreated it will get worse. For very minor ones you can sometimes get away with some large water changes but for ones where infection has set it i like to use melafix. (i like to buy my melafix at walmart, 6 bucks, and they have the related fungus med pimafix for the same price as well). My red empress female had to be moved to a new tank, had a terriable time catching her. I tried to net her in a cave and she gouged her eyeball real bad on a rock. Had a piece of her lens peeled up and the next morning the whole eye was clouded and filmed over. I removed the carbon from my filter and treated the whole tank with melafix as directed on the bottle. After 3 repeated treatments (with a day off in between each one to run a bit of carbon and do a 50 percent water change) you cant even tell it happended . I suggest you do the same treatment. If you have not done a good waterchange or tank cleaning for a while go ahead and do it now then add the melafix to the cleaned tank and watch that eye get better. After the treatment clears the eye up be sure to study the eyeball closely once a day for about a week to make sure it doesnt come back, first sign of a hazy eye relapse hit it once more with the melafix . Best to start the treatment right away. Dont over dose, follow directions exactly on bottle. Treatment is the same for several related issues such as eyecloud (from dirty substrate/water), fin rot and several other problems. These are bacterial in nature and melafix works great for me, never had a problem. Sometimes for repeated treatments i will use slightly less than the recommended dose since often the injury or infection is healing by that time and not as bad since i have treated with a full dose at least once all ready.