I would agree that it looks like ocular (eye) form of Mareks disease.
https://extension.umd.edu/sites/ext...Preventing Mareks Disease in Small Flocks.pdf
https://www.backyardchickens.com/articles/the-great-big-giant-mareks-disease-faq.66077/
https://extension.umd.edu/sites/ext...Preventing Mareks Disease in Small Flocks.pdf
https://www.backyardchickens.com/articles/the-great-big-giant-mareks-disease-faq.66077/
Thanks for the links, they're super informative!
You're obviously my "go to" person for all things ailing in the coop!
Looks like according to the articles there isn't anything to do for her, she could live for years as a carrier. Your other birds are already exposed, so it would come down to closing your flock. Don't give away or sell any of your birds (at least not without full disclosure about your flock having Mareks to them). Buy vaccinated birds only, and always quarantine new birds.