Neurophthalmology Ch9 Nystagmus Flashcards

1
Q

Vestibular nystagmus

افتراق پریفرال و سنترال؟

A

به نفع پریفرال:

1) mixed horizontal torsional
2) linear or constant velocity
3) unidirectional➡️alexanders law➡️شدت نیستاگموس طی نگاه به جهت فاز سریع افزایش میابد
4) suppressed by vision
5) adaptation
6) other vestibular symptoms

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2
Q

Central vestibular nystagmus?

A
Downbeat
Upbeat
Torsional
PAN
Seasaw
Positional
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3
Q

Location of lesion in downbeat nystagmus?

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A

Cervical-medullary junction

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4
Q

Location of lesion in downbeat nystagmus?

طبق قانون الکساندر در نگاه به پایین واضح تر است

A

Cervical-medullary junction

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