Rates of Childhood Myopia Progression with Bifocals as a Function of Nearpoint Phoria: Consistency of Three Studies

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Three studies on the effect of bifocal lenses on childhood myopia progression are discussed and re-analyzed. In all three, the rates of progression were less with bifocals than with single-vision lenses in esophoria. Rates with the two types of correction were similar in patients who had nearpoint orthophoria or exophoria.

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