Pupil looks cloudy.The green/gray discoloration generally happens to the iris, the colored part of the eye. The pupils in my birds generally constricted and became irregular shaped. Here is a side by side comparison. The eye on the right is normal, left is OMD.
The good news is that I'm suspecting you have something else going on with your hen. The bad news is, I don't know what.
The only way you may know for sure is to either cull the bird or if it dies naturally, send it in for a necropsy. Sorry I can't be of more help.

The good news is that I'm suspecting you have something else going on with your hen. The bad news is, I don't know what.
The only way you may know for sure is to either cull the bird or if it dies naturally, send it in for a necropsy. Sorry I can't be of more help.