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Abstract
Introduction: The modified push‐up method is recommended for testing the amplitude of accommodation in young children. In this study, the modified push‐up method was compared with the conventional push‐up method for measuring the amplitude of accommodation.
Methods: Three experiments were carried out in the validity study. The first experiment was set up to compare the measured amplitudes between the modified push‐up method and the conventional push‐up method. The second and third experiments were carried out to further investigate the possible contribution of the target choice or criterion choice, respectively, to the measured amplitude results. The repeatability study was then performed.
Results: The modified push‐up method produced lower measures of the amplitude of accommodation than the conventional push‐up method. The average difference was 0.40 D monocularly and 1.30 D binocularly. The choices of both target and criterion significantly contributed to the difference. The modified push‐up method was a highly repeatable method.
Conclusion: We conclude that the modified push‐up method is interchangeable with the conventional push‐up method for clinical use, but lower amplitude readings by 0.40 D monocularly and 1.3 D binocularly would be expected.