Her eyes looked just like the eye description for the Mareks disease that affects the eyes. No eye discharge or other clinical symptoms, just the grey eyes with pinpoint pupils and definately blind. I thought Mareks did not affect these older birds??? But, now I have another Buff, same age, that looks like her eyes may be starting to go too. This second hen is otherwise healthy and can still see. Rest of flock is healthy and happy looking, eating/drinking all normal. Any ideas? Thank you.