Definitely doesn't look normal. It actually almost looks like the caps themselves have thickened, and one definitely has an irregular surface. Is there any possibility of previous eye injuries?

I've never seen anything like that. My first assumption would be stuck eyecap as well but you said he's shed since this appeared and shed off his eye caps cleanly so I really have no clue. Hopefully some of the more experienced members on our forum have something more informed to say.

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Definitely doesn't look normal. It actually almost looks like the caps themselves have thickened, and one definitely has an irregular surface. Is there any possibility of previous eye injuries?

I've never seen anything like that. My first assumption would be stuck eyecap as well but you said he's shed since this appeared and shed off his eye caps cleanly so I really have no clue. Hopefully some of the more experienced members on our forum have something more informed to say.