You may never know what went wrong with his eye, but I think he is blind as well. It could be injury or infection, or a disease, but it probably won’t get better. Hopefully, it isn’t Mareks. I only have seen pictures of ocular Mareks, and it doesn’t look like pictures I have seen, but I am not an expert. I had a hen who did okay with only sight in one eye.Alrighty, here is an update. The cloudiness has increased and decreased depending on the day. However, now there are blood clots in his iris in three different places. What should I do? Should I try the other treatment option? He isn't even using the eye, so I assume he is already blind in that eye. The white string is part of the light source.