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Orientation and mobility outcome measures.

Kuo-Yi Jade Chang1,2, Lisa Lorraine Dillon2,3, Lil Deverell4

  • 1School of Public Health, The University of Sydney, Sydney, Australia.

Clinical & Experimental Optometry
|December 16, 2019
PubMed
Summary

Measuring orientation and mobility (O&M) for visually impaired individuals is complex. This review identifies numerous O&M measures, finding many suitable for clinical use, but emphasizes the need for multiple assessments for a complete picture.

Keywords:
blindnesslow visionmobilityorientationoutcome measuresvisual impairment

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Area of Science:

  • Ophthalmology
  • Rehabilitation Science
  • Human Factors Engineering

Background:

  • Orientation and Mobility (O&M) significantly impacts the quality of life for individuals with low vision or blindness.
  • Current methods for measuring O&M performance lack a universally agreed-upon gold standard.

Purpose of the Study:

  • To systematically review and inventory outcome measures used to assess O&M performance in adults with vision impairment.
  • To evaluate the appropriateness of these measures for clinical and functional O&M practice.

Main Methods:

  • Systematic review of recent studies on O&M outcome measures for adults with low vision and blindness.
  • Analysis of outcome measures based on efficiency, obstacle interaction, navigation accuracy, and self-reporting.
  • Evaluation of identified measures against criteria including face validity, responsiveness, reliability, and feasibility.

Main Results:

  • A wide variety of O&M outcome measures are used across different research fields.
  • Efficiency (time, speed, distance) and obstacle interaction are the most frequently measured aspects.
  • Approximately half of the reviewed outcome measures demonstrate potential for clinical or functional O&M practice.

Conclusions:

  • The complex and dynamic nature of O&M necessitates a multifaceted approach to performance assessment.
  • Multiple outcome measures are essential for a holistic evaluation of an individual's O&M abilities and limitations.
  • A significant portion of identified measures are suitable for implementation in practical O&M settings.