Calculation of AC/A ratio| Heterophoria Method| Gradient Method| Clinical Measuring of AC/A ratio

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  • Опубликовано: 9 сен 2020
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    Clinical measurement of AC/A ratio
    What does it mean by 4:1?
    Definition: The measurement of the convergence induced by accommodation per diopter of accommodation.
    Normal: 4:1
    Purpose:To determine the change in accommodative convergence that occurs when the patient accommodate or relaxes accommodate by a given amount.
    Methods of measurement of AC/A Ratio: 1. Heterophoria methods 2. Gradient methods
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