nystagmusAn oscillation of the eyes, usually with a relatively slow drift in one direction and a correcting flick in the other. Looking out of a moving vehicle at passing objects induces nystagmus. It can be caused by failure of vision fixation, a hereditary defect; weakness of the eye muscles, or diseases of the ear labyrinths, brainstem, or cerebellum. Related category HEALTH AND DISEASEAlso on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History |