Upbeat Nystagmus

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In primary position, the upbeat nystgamus is characterized by quick upward eye movements. Intensity increases when the patient looks upward (22 seconds) and decreases when the patient looks downward. This is a typical fixation nystagmus which cannot be suppressed by visual fixation.

In primary position, the upbeat nystgamus is characterized by quick upward eye movements. Intensity increases when the patient looks upward (22 seconds) and decreases when the patient looks downward. This is a typical fixation nystagmus which cannot be suppressed by visual fixation.