Several months ago we observed some strange changes around eyes of several individual Siberian hamsters (Phodopus sungorus) in our colony (outbred). I attach pictures. It looks like an irritation-induced change, but we think that it is rather a symptom of disease. In some hamsters, which were kept in sibling pairs the change appeared in one individual, but not in the other. Being advised by our veterinarian we were treating hamsters with antibiotics (enfloxacin - in water, gentamycin - topically), but the treatment was not effective. The change appears only around eyes. BTW, except for this irritation-like change hamsters are in good shape. No body mass loss, fur in good shape.
I would like to ask if anyone has an idea what it can be you ever seen anything like that in your hamsters? Do you have any clue what it could be, and if so how to treat it?
We will be grateful for your help, Michal et al.