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Comparison of nearpoint techniques

L Yee

    Journal of the American Optometric Association
    |July 1, 1981
    PubMed
    Summary

    The Borish card and Mallett unit showed significant differences compared to traditional nearpoint testing methods. These findings highlight variations in visual acuity and accommodation measurements across different nearpoint examination techniques.

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    Area of Science:

    • Optometry
    • Ophthalmology
    • Vision Science

    Background:

    • Accurate nearpoint testing is crucial for diagnosing binocular vision disorders.
    • Standardized examination techniques ensure reliable patient assessments.
    • Variations in testing equipment may influence diagnostic outcomes.

    Purpose of the Study:

    • To compare the diagnostic efficacy of three nearpoint testing methods: the Mallett near unit, traditional examination technique, and Borish nearpoint card.
    • To identify significant differences in visual function measurements obtained from these distinct testing procedures.
    • To evaluate the reliability and consistency of each nearpoint testing technique.

    Main Methods:

    • Thirteen subjects (11 males, 2 females; age 24-35) underwent nearpoint testing.
    • Three distinct testing procedures were employed: Mallett near unit, traditional technique, and Borish nearpoint card.
    • Statistical analysis was performed to determine significant differences between the testing methods.

    Main Results:

    • The Borish card showed significant differences from the traditional technique in visual acuity, unfused crossed cylinder, and fused cross cylinder tests (p < .05).
    • Donder's amplitude of accommodation differed significantly between the Mallett unit and Borish card (p < .05).
    • No significant differences were found for phorias, vergences, or associated phorias between traditional and Borish methods, or between Mallett and Borish for specific measures. Gross suppression was noted in 2/26 Mallett tests but none on the Borish card.

    Conclusions:

    • The Borish nearpoint card and Mallett unit yield significantly different results compared to traditional methods for specific visual function tests.
    • Clinicians should be aware of potential variations in outcomes based on the chosen nearpoint testing technique.
    • Further research may be warranted to establish the clinical significance of these observed differences in diagnosing and managing binocular vision anomalies.

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