Possibly blind chicken, does this sound like Marek's?

[Eggcessive]

So sorry about your hen. Cataracts can been seen from a variety of possible causes. Hers appear somewhat different than pictures of MG, avian encephalomelitis, and others since the pupil is usually dilated as well. A completely blind hen might have a hard time in a flock without some special treatment.

 

[BigBlueHen53]

So sorry about your hen. Cataracts can been seen from a variety of possible causes. Hers appear somewhat different than pictures of MG, avian encephalomelitis, and others since the pupil is usually dilated as well. A completely blind hen might have a hard time in a flock without some special treatment.

Thank you.

 

[HennyPennyMama]

I noticed this EE hen acting a little "off" two or three days ago and have been watching her closely. By "off" I mean she has not been as active as the others, has been hanging back at scratch time, self-isolating, low energy. She's molting, is about two years old. Her eyes seem unusually dark, as if the pupils are fully dilated. Today she couldn't seem to locate the gate to go out. So after they all roosted DH and I went out and checked her out. On shining a light into her eyes, the pupil refected back grey, almost opaque white. Other chickens' pupils shine black and normal. Her eye does not look deformed, keyhole shaped, but the pupil did not contract from the light. We isolated her and will conduct further tests in the morning: crop, belly, swelling, weight, etc. Thoughts? The flock is isolated as to other chickens. Thanks.

I have the same thing happening with one of my hens!

 

[natyvidal]

Is her eye actually blue or is that a reflection from something?

That’s her bad eye. Her other eye is black and orange. Normal for RIR