One of my fish have popeye ! help

[Reef Pilot]

I had this happen a few months ago to my Cinnamon Clown. It bulged out really big, and looked really bad. But since she was still eating and no other sign of disease, just left it. Took a few weeks, but gradually cleared up on its own (no medication), and now can't tell there was ever anything wrong.

My guess is maybe she hurt herself when protecting her territory. She is always hitting/biting things, like my glass cleaner or even my hand. Maybe she got a spine in the eye from my Foxface, or an urchin.

In any case, she is perfectly fine now, and never lost her belligerent ways.