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  1. Based on pattern of movement
    1. Jerky/jerk                         
    2. Pendular
  1. Nystagmus
    It is the repetitive involuntary to and fro oscillation of the eyes
    1. Pendular – Velocity is equal in each direction
    2. Jerk- Has slow drift and a fast phase
    3. Mixed – Pendular in primary position and jerk in lateral gaze
See- saw nystagmus is seen in patients with bitemporal hemianopia [ Because of parasellar lesion]
Sensory Nystagmus – Due to sensory deprivation

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