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Repeatability and Intercorrelations of Standard Vision Tests as a Function of Age

Lovie-Kitchin, Jan E. & Brown, Brian (2000) Repeatability and Intercorrelations of Standard Vision Tests as a Function of Age. Optometry and Vision Science, 77(8), pp. 412-420.

Abstract

Purpose: We assessed repeatability and intercorrelations of five standard vision tests in subjects with normal vision. Methods: Seventy-eight subjects (aged 21 to 68 years) completed five measurements each of high- and low-contrast visual acuity, near visual acuity and contrast sensitivity (Pelli-Robson chart). Results: Except for correlations between high- and low-contrast visual acuity (r = 0.78), intercorrelations between tests were low to moderate (r < 0.5). For each measure, variability for the group was about one line on the chart (one triplet for the Pelli-Robson chart) and the minimum variability for an individual subject was about one third of this. On average, 1 to 2 lines can be expected to be lost over the normal lifespan on each test. Variability in responses did not increase significantly with age for any test. Conclusions: The criterion for judging change on commonly used clinical vision tests is about one line for subjects over a wide age range.

Impact and interest:

58 citations in Scopus
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52 citations in Web of Science®

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ID Code: 5673
Item Type: Journal Article
Additional Information: The contents of this journal can be freely accessed online via the journal's web page (see link) 12 months after publication. Self-archiving of the author-version is not yet supported by this publisher. For more information, please refer to the journal's website or contact the author. Author contact details: j.lovie-kitchin@qut.edu.au
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Keywords: visual acuity, high contrast, low contrast, contrast sensitivity, clinical tests, aging, repeatability, logarithm of the minimum angle of resolution (logMAR)
ISSN: 1538-9235
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2000 Lippincott Williams & Wilkins
Deposited On: 01 Dec 2006
Last Modified: 15 Jan 2009 17:16

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