Abstract
A 55-year-old woman reported blurred vision while walking, numbness and tingling, contact allodynia, and gait imbalance. Visual acuity was 20/20 in both eyes, but there was a loss of 4 lines with horizontal dynamic visual acuity testing. Ocular motility examination demonstrated spontaneous downbeat nystagmus that increased in lateral gaze with a torsional component and impaired smooth pursuits. Head impulse test was positive, and electromyography demonstrated a sensory neuropathy/neuronopathy. Vestibular testing confirmed both central ocular motor pathway and bilateral peripheral vestibular system involvement. The constellation of clinical findings and paraclinical testing was consistent with a recently recognized neurodegenerative disorder termed cerebellar ataxia with neuropathy and vestibular areflexia syndrome.
Original language | English (US) |
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Pages (from-to) | 487-493 |
Number of pages | 7 |
Journal | Survey of ophthalmology |
Volume | 65 |
Issue number | 4 |
DOIs | |
State | Published - Jul 1 2020 |
Keywords
- cerebellar ataxia
- dynamic visual acuity
- head impulse test
- nystagmus
- vestibulo-ocular reflex
ASJC Scopus subject areas
- Ophthalmology