Popeye Cured but Blind...

The swelling in the eyes has subsided, but the front seems to have gone blind. Even with my hands waving close to the tank, it doesn't bulk at all, and it is having difficulty finding food. Other than the whitish eyes, it is eating and swimming well. It does look a little lerthagic, but then what do you expect since it can't see anything? sigh..Seems like I may not be able to put this fella back into the main tank. Such a pity for a beauty like it. Will either have to let it remain in the quarantine tank or see if anyone wants to take care of it. Euthanasia will be the last resort.