Onodi Cell Mucocele as a Cause of Acute-Onset Blindness - A Rare cause of Optic Neuropathy.

Compressive optic neuropathy caused by Onodi cell-associated mucocele is a rare complication with only a few cases reported in the literature. We describe a new case of Onodi cell mucocele in a 32-year-old woman who presented with progressive blurring of vision and pain in her right eye. CT and MRI were diagnostic of an Onodi cell mucocele. She underwent endoscopic sinus surgery 12 days after the onset of symptoms, and follow-up revealed improvement in symptoms.