Two different colored eyes - cause for concern?

chickengrapes

Chirping
Premium Feather Member
Mar 20, 2020
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I have a young naked neck silkie that has developed two different colored eyes. There doesn't appear to be anything wrong with the chick. The chick is 9.5 weeks old.
 

Eggcessive

Enabler
Premium Feather Member
9 Years
Apr 3, 2011
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Does she seem to see well to peck at food, treats, and water? Her eyes look very different. Ocular Mareks disease comes to mind, with the fuzzy outline of the pupils. Was she vaccinated? Ocular Mareks can cause a constricted pupil due to the iris changes including a fading color. I am not an expert on the disease, but here are some pictures of suspected ocular Mareks:
https://www.backyardchickens.com/content/type/61/id/6509488/width/500/height/1000/flags/LL

https://images.engormix.com/E_articles/2773_808.jpg

https://www.backyardchickens.com/articles/mareks-disease-fact-site.63752/cover-image
 

RoostersAreAwesome

Crossing the Road
May 21, 2017
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That doesn’t look like ocular Marek’s to me, but I could easily be wrong. Do both her pupils expand and contract when in different levels of light?
 

Eggcessive

Enabler
Premium Feather Member
9 Years
Apr 3, 2011
58,235
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southern Ohio
I do not see any difference or difficulty in her eating and pecking behavior. She was not vaccinated. She is one 3 chicks that hatched from our own chickens. I'm not really sure what to do at this point. There doesn't seem to be any issue with the pupil. Just this change in iris color as if they are slowly changing.
I certainly hope that she is fine. I don’t think there is anything to do if she seems to see normally.
 

RoostersAreAwesome

Crossing the Road
May 21, 2017
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Yes, both her pupils react to the light. I just checked to be sure.
That’s good. Hopefully it’s just an interesting eye color. I would be cautious about selling/giving away your chickens, but I wouldn’t worry about it otherwise unless she starts to show Marek’s symptoms or one of your other chickens dies of an unknown cause.
 

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