Originally Posted by KendraMc
while i don't know much about saltwater, aren't your nitrite and nitrate levels higher than they should be? could that have something to do with it?
I don't see the levels mentioned above to be problematic. Nitrites almost always register on a saltwater kit and are not the least problematic at that level. Nitrates at 38ppm might cause a problem in a reef, but certainly wouldn't cause this problem so quickly.
There are 2 very common causes of eye problems in large angelfish (and pufferfish). These are wounds inflicted in capture and/or transport, and secondly, alkalinity fluctuations. It appears that you did not quarantine your newly purchased fish, so guessing as to the quality of care during capture and shipping is virtually impossible. As such, I would look at 2 potential thoughts.
First, if the damage was caused to the eye before purchase, there is probably nothing you can do about it now. If you have a quarantine / hospital tank, you can remove the fish to the isolation tank and treat accordingly, but it is probably not going to be effective.
Second, if we assume the eyes are showing stress from alkalinity swings, we can take quick action to fix this issue and hope the immunity of the fish is strong. You should be adjusting alkalinity with a buffer, by testing for both alkalinity and calcium and using a 2 part additive to adjust both. If you are not familiar with this process, there is a very detailed article in our reference library, located here: http://www.tropicalfishkeeping.com/w...-marine-33079/
I hope this helps. If you have any questions, don't hesitate to ask.