[Symptomatology of infrequent visual disturbances in multiple sclerosis patients].

Two cases of clinically certain multiple sclerosis were observed in whom rather infrequently occurring symptoms of damage to the visual pathways were noted. In one case during right-sided optic neuritis cyanopsia developed, followed after five months by left-sided alternatively darkening and lightening of vision. In another case with bilateral retrobulbar optic neuritis attacks of fading-out vision appeared when the patient fixed an object. Two years later the patient had episodes of chloropsia.