Unilateral papilledema: a case of optic neuritis diagnosed with bedside ocular sonography.

Optic neuritis is a demyelinating inflammatory condition that causes acute loss of vision, especially color vision, and eye pain. Magnetic resonance imaging and fundoscopy have traditionally aided the diagnosis of what largely remains a clinical diagnosis. We report a case of optic neuritis diagnosed in the emergency department with the aid of bedside ocular sonography. The pathophysiology, diagnosis and management of acute optic neuritis will be reviewed.