Thank you that is so helpful. So, is there anything I can do for either the infected hen or her flock mates? Is it likeley that she develops regular Mereks as well? Also, I will send an additional photo.
I have a D'Uccle hen who has gradually gone blind at about 7 weeks of age. First, one eye became cloudy over the pupil and she seemed to not be able to see out of it. Then, the same thing happened to her other eye. Both eyes are now cloudy and she doesn't seem to be able to see things around...