True about central nystagmus:
Correct Answer: Duration > 1 min
Description: Impoant differentiating features between peripheral and central nystagmus include the following: Characteristic of spontaneous nystagmus Peripheral vestibular Central vestibular Direction Direction-fixed i.e. unidirectional nystagmus. Direction changing i.e. bidirectional. On visual/optic fixation The nystagmus disappears with visual fixation. The nystagmus, does not disappear with visual fixation Latency 2 - 20 seconds No latency Duration Less than 1 minute More than 1 minute Fatigability Fatigable Non-fatigable
Category:
ENT
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