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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
14:52

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

Published on: December 11, 2013

Postural control in subjects with visual impairment.

René Schwesig1, Yakov Goldich, Ales Hahn

  • 1Department of Sport Science, Martin-Luther-University of Halle, Halle, Germany.

European Journal of Ophthalmology
|September 21, 2010
PubMed
Summary
This summary is machine-generated.

Long-term visual impairment affects balance, particularly when acquired. Congenitally blind individuals better utilize sensory systems for compensation, maintaining stability effectively.

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Biomechanics

Background:

  • Visual impairment significantly impacts daily life, including motor control.
  • Postural control relies on integrated sensory information from visual, somatosensory, and vestibular systems.
  • The long-term effects of non-experimentally induced visual impairment on balance are not fully understood.

Purpose of the Study:

  • To investigate the impact of long-term visual impairment on postural control.
  • To identify compensatory mechanisms employed by individuals with visual impairments.
  • To differentiate the effects of acquired versus congenital visual impairment on balance.

Main Methods:

  • Posturography was used to assess balance in 50 visually impaired subjects (congenital and acquired) and 50 healthy controls.
  • Balance was tested under four conditions: firm surface/foam pads and eyes open/closed.
  • Fourier analysis was applied to analyze postural sway characteristics.

Main Results:

  • Acquired visual impairment led to significantly reduced stability, especially on foam pads with eyes open.
  • Congenitally blind subjects performed comparably to controls with eyes open and better with eyes closed.
  • Visually impaired individuals exhibited reduced sway intensity in low-frequency ranges (below 0.1 Hz), indicative of visual system contribution.

Conclusions:

  • Visual impairment significantly influences postural control, with acquired impairment posing a greater challenge.
  • The somatosensory and vestibular systems are crucial compensatory mechanisms for maintaining balance.
  • Congenitally blind individuals demonstrate superior utilization of non-visual sensory systems for postural stability.