Optic neuritis (ON) can occur alone or in many cases as a symptom of an underlying CNS autoimmune or demyelinating process like multiple sclerosis. It can also be associated with other causes like infection, granulomatous disease, and paraneoplastic and metabolic disorders. Optic nerve inflammation causes subacute loss of vision, usually in 1 eye, and usually associated with retro-orbital pain that is worsened with eye movement. Clinical recovery and prognosis will vary depending on the etiology.
Jun. 16, 2020