I had the same issue, some fish in my tank seemed fine where a lot of newcomers were dying except for the super hardy ones. I lost anthias, emperor angel, etc. lots of cool stuff. But my other fish seemed fine, my anthia has its eye pop out. I’ve come to the conclusion now that it was more than likely flukes, that were able to latch onto the fish with weaker stress coats in the tank, this particular fluke species liked to go for the eyes of some of my fish too, which resulted in your situation of a bacterial infection from the wounds. I ended up treating my reef tank with prazi pro and kannaplex which for now is the only thing that has worked to not only heal up my fish’s eye but hopefully eradicate the parasites as well.
The flukes I was dealing with seemed to be prazi pro resistant. On my first treatment I followed the instructions on the bottle and added kanaplex and the problem temporarily went away for like a few weeks, this time seems to have worked better, I added a little more than recommended dosage and did it every 3 days 3 times instead of 2.