Characteristics of the study population used in the studya.
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The �� sign is a standard deviation.aThe study population after quality control procedures.bFor the calculations of refraction, 177 eyes (29.8%) in the first stage and 303 eyes (28.4%) in the second stage that had undergone cataract surgery or corneal refractive surgery were excluded.
创建时间：
2015-12-02
