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Downbeat Nystagmus

Legend: A patient with a Chiari I malformation exhibits downbeat nystagmus in downgaze. Magnified view of the right eye exhibits a trace amount of downbeat nystagmus in right downward gaze. The downbeat nystagmus is more obvious in left downward gaze. High-resolution infrared video shows downbeat nystagmus in down and lateral gaze. At the end of the video, the downbeat nystagmus is visualized in the central position.

Duration: 00:53

Associated with: CONTINUUM: Lifelong Learning in Neurology. 25(5):1376-1400, October 2019

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