Contracted Pupil? (Not Emergency)

[Devyn Nagy]

One of my chickens has one contracted pupil, and the other is normal. It doesn't seem to be blind; she responds to my hand in front of her eye, and she shows no other abnormal signs. She has been like this a few days. What does this mean?

 

[Devyn Nagy]

It's not completely tiny, as in this post, but it is smaller than the other.

 

[Eggcessive]

Can you post a picture of the eye? Is the color the same in both eyes? Light in the eye can make the pupil contract and become smaller, but ocular Mareks disease may cause an irregular shaped small pupil and fading or gray color.

 

[Devyn Nagy]

@Eggcessive
Here are comparison photos. Took about 15 tries.

 

[Devyn Nagy]

I might be imagining a bit of grey discolouration on the bottom of the small pupil.