Nystagmus
                                                       Causes in infants and children

o   Slow < 40 jerks / min...
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27 Nystagmus

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27 Nystagmus

  1. 1. Nystagmus Causes in infants and children o Slow < 40 jerks / min o Albinism o Fast > 100 jer / min o Bilateral optic nerve hypoplasia = morsier’s syndrome o Bilateral media opacities o Achromatopsia So κ.φ= 40 – 100 jerks /min o Retinitis pigmentosA = USHER’S SYNDROME Amplitude o Fine < 1mm o Coarse > 3mm Involvement o Bilateral eyes o Unilateral eye ABSENT NYSTAGMUS IN ACUTE SEVERE VERTIGO IS UNUSUAL Normal findings o Lateral gaze nystagmus Ubnormal findings o Spontaneous or front gaze nystagmus o Horizontal = peripheral disease = unilateral vestibular pathology o Vertical = CNS = brain stem lesion

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