Powder Blue / Left Eye

[Sylvester]

Hey,
I've had this PB for 1 year with no issues. I came home today and noticed this on his left eye only. No there Mark's on body or white spots. All other tank mates are good.
Anyone see this before?

 

[Jeff Jarry reef]

Maybe he ran into a rock. my Tang get scratches every now and then from Rock's running into them.

 

[Sylvester]

Ya? I guess it is possible. He does pick up some good speed sometimes.