Acute optic neuritis: its clinical features and their relation to prognosis for recovery of vision.

The clinical syndrome of acute optic neuritis has been known for many years though its causes are still uncertain. McAlpine, Lumsden, and Acheson (1965) state that the only common cause of unilateral optic neuritis is multiple sclerosis, but many others have been suggested (Woods and Rowland, 1931;