Nystagmus is a vision condition in which the eyes make repeated jerking uncontrollable movements. These movements often result in difficulty reading, focusing and depth perception problems. These uncontrollable and involuntary eye movements can be from side to side (Horizontal), up and down (Vertical) or in a circular (Rotary) motion. Also, movements may also be classified as either Upbeat or Downbeat.

Midline cerebellar disturbance is indicated in cases of Superficial Siderosis. Nystagmus is caused by dysfunction of the vestibular nerve, the vestibular nucleus within the brainstem, or parts of the cerebellum that transmit signals to the vestibular nucleus and is classified under ataxia.

Nystagmus will affect your vision by changing how you see things because of this constant movement. It will impact your ability to focus, maintain a clear image, watch television or read. Severe Nystagmus can negatively affect your ability to drive safely and in some cases progress to the point you may be declared legally blind. Fatigue or stress is known to cause eye movements to increase.

A specialized contact lens is considered to offer the best alternative by moving with your eye. In mild cases, the weight of contacts may help slow down eye movement.




Updated: November 6, 2020

Sources: Superficial siderosis is a rare neurologic disease characterized by progressive sensorineural hearing loss, cerebellar ataxia, pyramidal signs, and neuroimaging findings revealing hemosiderin deposits in the spinal and cranial leptomeninges and subpial layer. The disease progresses slowly, and patients may present with mild cognitive impairment, Nystagmus, dysmetria, spasticity, dysdiadochokinesia, dysarthria, hyperreflexia, and Babinski signs. Additional features reported include dementia, urinary incontinence, anosmia, ageusia, and anisocoria. Superficial siderosis MedGen UID: 831707 •Concept ID: CN226971 •Finding Orphanet: ORPHA247245
Koeppen AH, Michael SC, Li D, et al: The pathology of superficial siderosis of the central nervous system. Acta Neuropathol. 116:371–382. 2008
Miwa et al. BMC Ear, Nose and Throat Disorders 2013, 13:5 Vestibular function in superficial siderosis
Living With SuperficialSiderosis Website PubMed Reference Library 

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