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Mesh term Nystagmus, Pathologic

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Ocular Motility Disorders

Description

Involuntary movements of the eye that are divided into two types, jerk and pendular. Jerk nystagmus has a slow phase in one direction followed by a corrective fast phase in the opposite direction, and is usually caused by central or peripheral vestibular dysfunction. Pendular nystagmus features oscillations that are of equal velocity in both directions and this condition is often associated with visual loss early in life. (Adams et al., Principles of Neurology, 6th ed, p272)


Browse to child terms:
Nystagmus, Congenital


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jenkins-FCD Prod-482 91ad8a360b6da540234915ea01ff80e38bfdb40a