Abstract
The aims of the study were (1) to compare the accuracy and intrasession variability of noncycloplegic autorefraction (AR) obtained by a photorefractor and conventional and open-field autorefractors and (2) to evaluate the impact of accommodative and binocular vision anomalies on the accuracy of autorefraction. Twenty-nine children and adolescents aged 8–18 years were examined. All instruments gave more myopic results than subjective refraction (SR). Mean differences between the SR and the AR were ${+}{0.52/\! -\! 0.25} \times {96}^\circ$ for the photorefractor, ${+}{0.63/\! -\! 0.31} \times {93}^\circ$ for the conventional autorefractor, and ${+}{0.19/\! -\! 0.26} \times {94}^\circ$ for the open-field instrument. The photorefractor appeared to be the most repeatable. The impact of the examined vision anomalies on the accuracy of autorefraction was not statistically significant.
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