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Related Concept Videos

The Vestibular System01:29

The Vestibular System

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The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
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Updated: Mar 23, 2026

Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
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Reliability and Normative Data for the Dynamic Visual Acuity Test for Vestibular Screening.

Kristal M Riska1, Courtney D Hall

  • 1*Auditory and Vestibular Research Enhancement Award Program, James H. Quillen VA Medical Center, Mountain Home †Department of Audiology and Speech-Language Pathology ‡Department of Physical Therapy, East Tennessee State University, Johnson City, Tennessee.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|March 23, 2016
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Summary

Computerized dynamic visual acuity (DVA) testing shows poor-to-fair reliability for DVA loss scores. Further research is needed to improve the accuracy of this clinical tool for assessing gaze stability.

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Area of Science:

  • Vestibular system function
  • Oculomotor control
  • Clinical audiology and neurology

Background:

  • The vestibular system is crucial for gaze stability during head movements.
  • Dynamic visual acuity (DVA) testing assesses gaze stabilization.
  • Limited data exists on the reliability and normative values of computerized DVA systems.

Purpose of the Study:

  • To evaluate the reliability of a computerized dynamic visual acuity (DVA) testing system.
  • To establish reference values for DVA in younger and older adults.

Main Methods:

  • Recruited 46 healthy adults, stratified by age.
  • Administered computerized DVA testing (static visual acuity, minimum perception time, DVA) using the NeuroCom inVision System.
  • Assessed inter-rater and test-retest reliability using intraclass correlation coefficients (ICCs).

Main Results:

  • Inter-rater reliability ICCs ranged from 0.323 to 0.937 (horizontal) and 0.434 to 0.909 (vertical).
  • Test-retest reliability ICCs ranged from 0.154 to 0.856 (horizontal) and 0.377 to 0.9062 (vertical).
  • Raw DVA scores demonstrated higher reliability than DVA loss scores.

Conclusions:

  • The tested computerized DVA system exhibits poor-to-fair reliability for DVA loss scores.
  • Potential factors influencing reliability include the testing paradigm (convergence vs. forced choice).