Popeye male Clown

[Jason McK]

I noticed today that my Male False Perc has what you might call Popeye only in one eye. It is very extended and cloudy. After consulting Joyce Wilkerson's book "Clownfishes" I have turned here for some Help. Can you believe I cracked a book
It is my understanding that a disease or parasite would effect both eyes. Has anyone run into this and found a cure? Or do you think it was just a fight.
Readings as of 6:30 Nov17
Ammonia 0
Nitrite 0
Nitrate <5
PH 8.2
Temp 79-81
I installed a UV sterilizer last week end