I think my Plymouth rock bantam might be blind

[Laineybug]

So I have this 3 year old barred Plymouth Rock. She has had a long journey through fairs. I have noticed a couple months ago that she has different colored eyes. One is a normal orange brown but the other is more green. I assumed she was blind in the green one because she is always bidding her head in the direction she wants to look at. However lately she has been closing her normal eye. We have isolated her from the rest she has been taking water from a syringe and sometimes yogurt but not really eating. I have assumed that she is an old lady for a bantam and she could be close to her time. Let me know what you think.

 

[Eggcessive]

The left eye might be considered more of a grey color, and the color can change gradually. Sometimes that may be a sign of ocular mareks disease. They can get it in one or both eyes, and become blind. Ocular mareks is one type of mareks, and other signs can be paralysis in a leg or wing, tumors, skin lesions, and a lack of immunity. Fairs and poultry shows can be a risk of picking up diseases. Here is some reading about Mareks:
https://extension.psu.edu/mareks-disease-in-chickens

https://www.backyardchickens.com/articles/the-great-big-giant-mareks-disease-faq.66077/