A New Test for Screening Color VisionConcurrent Validity and Utility
作者:
PAUL PEASE,
JANE ALLEN,
期刊:
American Journal of Optometry and Physiological Optics
(OVID Available online 1988)
卷期:
Volume 65,
issue 9
页码: 729-738
ISSN:0093-7002
年代: 1988
出版商: OVID
关键词: anomalous color vision;color vision test;pseudoisochromatic plates;children;preschool screening
数据来源: OVID
摘要:
Recognizing the need for an effective test for screening color vision in young children, we have developed a new pseudoisochromatic (PIC) plate test which is useful for a wide variety of observers at different ages. The test consists of four plates and responses can be used to categorize color vision as normal or as either red-green or blue-yellow defective. Results of this validation study with adults, both color normal and red-green defective, show a high degree of correlation between the new test and the Nagel anomaloscope: there were no false positives and only a few false negatives, which occurred with mild deuter-anomalous observers. The validity of the test compares favorably to the Ishihara, F-2, and the AO-HRR screening plates. Results with toddlers (3 to 6 years) indicate that the task demands of the test are well suited for testing young children. The percentage of color defectives identified in the toddler sample using the new test is closer to the adult prevalence than results obtained with the F-2 and AO-HRR screening plates, which gave dramatically higher failure rates. The new test is culture-free and can be administered rapidly to both verbal and nonverbal observers using pointing or preferential looking.
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