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Visual vertigo syndrome: clinical and posturography findings
1MRC Human Movement and Balance Unit, Institute of Neurology, National Hospital for Neurology and Neurosurgery, London, UK.
Journal of Neurology, Neurosurgery, and Psychiatry
|November 1, 1995
Summary
Visual vertigo, often linked to vestibular disorders, can stem from peripheral or central causes. Visual stimuli can exacerbate symptoms, especially in patients with visual field dependence or strabismic issues.
Area of Science:
- Neuroscience
- Ophthalmology
- Vestibular System
Background:
- Visually induced vertiginous symptoms (visual vertigo) present a complex diagnostic challenge.
- Understanding the underlying causes of visual vertigo is crucial for effective management.
Observation:
- Neuro-otological and posturography assessments were conducted on 15 patients experiencing visual vertigo.
- Peripheral vestibular disorders were identified in 13 patients, with 7 showing abnormal vestibular test results.
- Central nervous system (CNS) disorders were noted in two patients: cerebellar degeneration and brainstem stroke.
Findings:
- Posturography revealed significant body sway in five patients when exposed to full-field visual motion.
- This subgroup included patients with CNS disorders and those with strabismic symptoms (diplopia, squint surgery, ocular muscle weakness).
- Visual vertigo is a heterogeneous condition with potential peripheral or central origins, exacerbated by visual field dependence.
Implications:
- Patients with balance disorders and high visual field dependence may be susceptible to visual vertigo.
- Co-existing CNS or strabismic symptoms can impair sensory conflict resolution, leading to postural instability in visually complex environments.
- This highlights the need for comprehensive assessment in visual vertigo patients to identify contributing factors and guide treatment strategies.