vertical nystagmus

vertical nystagmus
vertical nystagmus n nystagmus characterized by up-and-down movement of the eyes

* * *

an up-and-down movement of the eyes.

Medical dictionary. 2011.

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  • Physiologic nystagmus — a form of involuntary eye movement that is part of the vestibulo ocular reflex (VOR). It is characterized by alternating smooth pursuit in one direction and saccadic movement in the other direction.Nystagmus can be caused by subsequent foveation… …   Wikipedia

  • nistagmo vertical — Eng. Vertical nystagmus Nistagmo en el que las oscilaciones oculares aparecen en sentido vertical …   Diccionario de oftalmología

  • downbeat nystagmus — a type of vertical nystagmus in which the fast phase is downward; seen in lesions at the cervicomedullary junction …   Medical dictionary

  • upbeat nystagmus — a vertical nystagmus with the fast phase upward, occurring in lesions of the vermis cerebelli …   Medical dictionary

  • Dissociated Vertical Deviation — Dissociated Vertical Deviation(DVD) is an ocular condition which occurs in association with a squint, typically Infantile Esotropia. Patients with DVD show an upward movement of one eye when the eye is covered (i.e. when the two eyes are… …   Wikipedia

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