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Journal of Learning Disabilities
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Test-Retest Reliability of Colored Filter Testing

Marc Woerz

Marc Woerz, OD, practices optometry in the Dallas-Ft. Worth area. He specializes in primary care and general optometry.

Willis C. Maples

Willis C. Maples, OD, is a professor of optometry at Northeastern State University College of Optometry. He is chief of Vision Therapy Services at W. W. Hastings Indian Health Services Hospital in Tahlequah, Oklahoma. His research interests are in the epidemiology of refractive conditions and dysfunctions in indigenous populations, functional vision problems that may affect learning, and optometric rehabilitative care of individuals with brain damage. Address: Willis C. Maples, College of Optometry, Northeastern State University, 1001 N . Grand Ave., Tahlequah, OK 74464-701 7.

This article evaluates the reliability of colored filter testing procedures. Properly chosen colored filters, with the tint being specific to each patient, are said to be effective in the treatment of dyslexia. We investigated the test-retest reliability of colored filter testing in relationship to two specific symptom levels using a forced-choice test procedure. This research was to evaluate test-retest reliability, not the validity of colored filter testing. Forty-one participants (28 boys and 13 girls) ranging in age from 15 to 17 years served as participants. Two tests, separated by 2 weeks, were conducted under standard conditions. Results indicated poor test-retest reliability.

Journal of Learning Disabilities, Vol. 30, No. 2, 214-221 (1997)
DOI: 10.1177/002221949703000209
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