Sino-orbital aspergillosis in a dog.

Fungal rhinitis-sinusitis with orbital involvement was diagnosed in a dog with profuse unilateral ocular and bilateral nasal discharge, enophthalmos, and a corneal descemetocele. The descemetocele was treated with a conjunctival pedicle graft. Frontal sinusotomy was performed, and clotrimazole was infused through catheters placed in the frontal sinuses and nasal cavities to saturate the tissues for 1 hour. Successful resolution of orbital infection may have been aided by a fistula between the frontal sinus and orbit that allowed delivery of clotrimazole to the orbit. The dog retained sight in the affected eye, and clinical signs of infection were not detected 14 months later, although enophthalmos and medial strabismus may have been caused by persistent postinflammatory fibrosis.