My Coral Beauty Angle did the same thing, cloudy eyes. I seperated and started hypo in a hospital tank, within a few days I saw visible improvement, also to add you can use Maracyn 2 (an antibiotic), that is what I was told here a few months back. Check on if you can use hypo AND maracyn at the same time (I believe so, but dont want to steer you wrong). I cant find my print out of that info. HTH
My post I believe was "cloudy eye" if you want to search for that, there is info there. I have not figured out yet what the disease was called though. Good luck!