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Related Experiment Videos

Validity and Repeatability of a Novel Dynamic Visual Acuity System.

Mariko Hirano1, Natalie Hutchings, Trefford Simpson

  • 1*BSc, PhD, MCOptom †Dip Optom, PhD ‡OD, PhD, FAAO Vision & Motor Performance Lab, School of Optometry & Vision Science, University of Waterloo, Waterloo, Ontario, Canada (all authors).

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|April 20, 2017
PubMed
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The novel moV& system offers clinically comparable static visual acuity measurements to standard charts. It also demonstrates good test-retest repeatability for both static and dynamic visual acuity, crucial for sports vision assessment.

Area of Science:

  • Sports Science
  • Ophthalmology
  • Vision Science

Background:

  • Athletes often depend on visual information for performance.
  • Research shows mixed results on whether athletes possess superior visual abilities compared to non-athletes.
  • A significant limitation in sports vision research is the lack of standardized, validated tools for assessing sport-specific visual demands.

Purpose of the Study:

  • To evaluate the validity and repeatability of a new visual acuity system, moV& (Vision & Motor Performance Lab).
  • To assess moV&'s capability in measuring various visual function parameters, including dynamic visual acuity with different target motions.

Main Methods:

  • Twenty-five participants completed two study visits, at least two weeks apart.
  • Static and dynamic visual acuity were measured using Snellen, ETDRS, and moV& charts at each visit.

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  • moV& static visual acuity was compared to ETDRS for validity; static and dynamic acuities were compared between visits for repeatability.

    • Main Results:

    • moV& static visual acuity measurements showed clinical similarity to ETDRS chart results (concordance correlation coefficient 0.726).
    • All static, dynamic, and jitter visual acuity measurements exhibited good test-retest repeatability (Lin's concordance correlation coefficient range 0.451-0.953).

    Conclusions:

    • The moV& system provides valid static visual acuity measures comparable to established clinical charts (Snellen and ETDRS).
    • The system demonstrates good test-retest repeatability for dynamic visual acuity assessments, making it a reliable tool for sports vision evaluation.