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Related Experiment Videos

Normalization of prism bar vergences

M D Wesson

    American Journal of Optometry and Physiological Optics
    |August 1, 1982
    PubMed
    Summary

    Normal values for asymmetric prism bar vergences were established using clinic data. The study found that the order of prism testing and eye dominance do not significantly impact vergence values.

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    Area of Science:

    • Optometry and Vision Science
    • Clinical Research

    Background:

    • Establishing normative data for clinical measurements is crucial for accurate patient assessment.
    • Asymmetric prism bar vergences are important clinical measures in optometry.

    Purpose of the Study:

    • To derive normal values for asymmetric prism bar vergences.
    • To investigate the influence of prism testing order and eye dominance on these values.

    Main Methods:

    • Data collected from the clinic population at the School of Optometry, University of Alabama in Birmingham.
    • Analysis of means, standard deviations, prism presentation order, and eye dominance across three clinical groups.

    Main Results:

    • Normative standards for asymmetric prism bar vergences were successfully established.
    • Neither the order of prism presentation nor eye dominance showed a significant effect on the obtained vergence values.

    Conclusions:

    • The derived values provide reliable standards for clinical use in optometric practice.
    • Clinical protocols for measuring asymmetric prism bar vergences can be standardized without concern for testing order or eye dominance.

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