Nystagmus

The involuntary, rapid, uncontrollable, rhythmic oscillation of the eyeballs, which may be horizontal, vertical, rotary, or mixed. Possible causes are neurological conditions (multiple sclerosis, stroke, traumatic brain injury, brian tumor), vestibular disorders (Ménière's disease, labyrinthitis/vestibular neuritis, BPPV), ocular issues (albinism, cataracts, severe myopia/astigmatism, optimal nerve disease, retinal disorders), nutritional deficiency (thiamine, vitamin B12), and drugs (anti-epileptics, lithium, alcohol intoxication).