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What Are the Causes of Involuntary Eye Movement?

author image Kate Beck
Kate Beck started writing for online publications in 2005. She worked as a certified ophthalmic technician for 10 years before returning to school to earn a Masters of Fine Arts degree in writing. Beck is currently putting the finishing touches on a novel.
What Are the Causes of Involuntary Eye Movement?
A person with nystagmus may not know when her eye moves involuntarily. Photo Credit: Medioimages/Photodisc/Photodisc/Getty Images

Involuntary eye movement, a condition doctors refer to as nystagmus, causes the eyes to move up and down or side to side. Some people experience circular eye movement as well. People with nystagmus might not realize their eyes move unless the eyes move in extreme motions. Knowing some of the causes of nystagmus could help determine the reason the condition appeared since nystagmus can result from a number of conditions.

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Congenital Cataracts

Some children have involuntary eye movement at birth. Congenital cataracts typically cause this type of eye movement, particularly if the cataract has a significant effect on vision. Cataracts result when the natural lens in the eye turns cloudy, and congenital cataracts appear at birth or very early in childhood. Other symptoms of congenital cataract may include a white appearance to the pupil and a lack of visual interest, explains the University of Maryland Medical Center. An eye doctor will monitor the cataract and vision. Many children do not require early treatment of the cataract, but they might need an eyeglass prescription for the best possible vision. If the cataracts affect vision, an eye doctor could recommend surgical removal of the cataract.

Systemic Conditions

Certain systemic diseases or conditions, such as albinism, for example, may cause nystagmus. Albinism causes a number of eye problems in addition to involuntary eye movement, such as light sensitivity, eye misalignment and extreme refractive errors, states Albinism results from a genetic condition that prevents the body from making pigment, causing a person to have pale skin. In addition to affecting eye motility, the lack of pigment will also affect the color of the eyes. The iris will have an almost transparent appearance, causing eye color to seem red.

Other systemic conditions and diseases that can result in nystagmus may involve inner ear conditions, such as Meniere’s disease, or toxicity from drugs, alcohol or prescription medications. If a systemic condition has available treatments, controlling or resolving the medical condition might reduce episodes of involuntary eye movement. Some conditions, such as albinism, which do not have treatments, may require surgery on the muscles of the eye to reduce the occurrence.


Neurological disorders can cause nystagmus. For example, conditions such as a brain tumor or multiple sclerosis could cause nystagmus, explains MedlinePlus. In most neurological conditions, the involuntary eye movements will not improve but may gradually worsen with the disorder. Multiple sclerosis is one such progressive disease that does not have a cure. The instances of involuntary eye movements will often increase as the disease worsens and, in most cases, surgical treatment of the muscles will not have a long-term effect. Treatment and resolution of brain tumors that affect eye movement may still leave residual neurological problems. Some patients may experience complete return of normal eye movements, but others might continue to have involuntary eye movements.

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