A portable device for the assessment of dynamic visual acuity

    Authors

    J. A. A. Smither;R. S. Kennedy

    Comments

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    Abbreviated Journal Title

    Appl. Ergon.

    Keywords

    Dynamic visual acuity; Visual screening; Portable DVA; AGE; TESTS; Engineering, Industrial; Ergonomics; Psychology, Applied

    Abstract

    Dynamic Visual acuity (DVA) thresholds are among the few visual functions predictive of automobile crashes. DVA is also sensitive to alcohol and aging. However, measuring DVA is awkward because there is no standardized, efficient, flexible apparatus for DVA assessment. In this project, we developed a prototype of an automated, portable DVA system using a low-energy laser, and we compared this laser DVA with the traditional device in two within-subjects, repeated measures designs. The two studies included 48 participants (22 males and 26 females with an average age of 18.33 years). The most important findings were that: (I) retest reliabilities of the two DVA devices were comparable and higher with the laser; (2) average correlations between the two devices were r = 0.62 (p < 0.01) and r = 0.65 (p < 0.01) for the two designs respectively; and (3) after correction for reliability attenuation these improved to r = 0.92 and r = 0.78. These findings indicate that a flexible DVA laser device can be developed to measure the same construct as the more traditional bulky DVA device. (C) 2009 Elsevier Ltd. All rights reserved.

    Journal Title

    Applied Ergonomics

    Volume

    41

    Issue/Number

    2

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    266

    Last Page

    273

    WOS Identifier

    WOS:000272406300011

    ISSN

    0003-6870

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