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I’m glad that she’s doing better. The fact that she isn’t losing weight is a good sign.

Thank you for the links. Though they don’t seem to disprove that a pinprick pupil with a gray ring around it is a symptom of Marek’s. I understand that the only way to be sure is through a necropsy, but that’s the case with a lot of infectious poultry diseases, as is noted in the first link...

If you can find a source that doesn’t list her eye’s condition as a symptom of ocular Marek’s I’d be happy to look into it.

Pinprick pupil with a gray ring around it is textbook ocular Marek’s symptoms.

In certain instances it is obvious that a bird has ocular Marek’s. An example: This hen wasn’t born like this, and it’s only her one eye that’s affected. Also, she isn’t blind in that eye, so it’s unlikely to be an injury.