Radiological manifestation of optic nerve infarction in a patient with invasive mucormycosis secondary to diabetic ketoacidosis in Pakistan.

A 35 years old male patient presented in the hospital with complaints of left-sided facial swelling, blindness in the left eye, and left eye proptosis. He had a concomitant history of diabetic ketoacidosis. Magnetic resonance imaging was advised, which revealed infected tissue of the left cheek, optic nerve infarction, intracranial extension, and leptomeningeal involvement by the disease process.