This RIR is less than a year old and is apparently going blind. There are no other injuries and the cause is unknown. No other birds have the symptom. My birds get a 20% protein grain and layer mix, clean water and scraps, nothing out of the ordinary. I did have some semi-moldy straw which was used before I knew it was a bad idea. Poops seem normal. I've been watching this for the past couple months. Below are some pictures. What I really want to know is if I should worry about this being something more than just simple blindness like a disease of some sort. Also how can I help accommodate her? Right now she can still see out of her other eye and she functions well enough. She is less eager to go out during low light but otherwise she seems quite healthy. If there are serious concerns of spreading disease she'll likely be culled out, I cannot afford other options. This is the bad eye. As far as I can tell she still has some sight but it probably isn't very good. This eye looks like the other one used to, about 3-4 weeks ago. The pupil responds to light however it's considerably smaller. I should note that these pictures are about a month old and the worse eye has gotten considerably more grey however it has regained it's shinyness, while the good eye actually looks a bit better.