Two cases of the diagnosis of optic neuritis leading to the diagnosis of multiple sclerosis.

More than one of three persons with multiple sclerosis will eventually get optic neuritis during the course of their disease. In each case below, a patient presented to an optometrist with optic neuritis, the discovery of which aided in the subsequent diagnosis of multiple sclerosis. These patients exhibited most of the typical signs of optic neuritis; reduced visual acuity, Marcus Gunn pupil, central scotomata, reduced color vision, abnormal funduscopic appearance, and pain on eye movement.