Serous retinal detachment in a patient with rhino-orbital mucormycosis.

BACKGROUND Rhino-orbital mucormycosis is a difficult disease to treat. We report one case of rhino-orbital mucormycosis, complicated by serous retinal detachment, that responded to aggressive treatment. CASE A 38-year-old man with diabetic ketoacidosis was referred to the emergency department of our hospital with fever, proptotic right eye, and complaint of lethargy. OBSERVATIONS Fundus examination showed serous retinal detachment and focal lesions of retinitis with exudate at the inferior portion coincident with the position of opacification in the orbit on MRI. Fluorescein angiography showed pooling of dye in the detached retina and leakage from focal lesions of retinitis. We thoroughly removed the large necrotic materials in the orbit and sinus through the lower conjunctiva without enucleation or exenteration. Microscopic examination and culture of the necrotic materials that were removed from the orbit proved that the patient had mucormycosis. The serous retinal detachment improved 10 days after orbital debridement combined with intravenous and local (intraorbital) amphotericin B treatment. Visual acuity recovered to 20/50. CONCLUSION We propose that inflammation of the sclera in close contact with necrotic fungi materials may cause serous retinal detachment.