目的探讨准分子激光屈光性角膜切削术（PRK）后角膜表面形态和屈光力变化。
ObjectiveTo investigate the change in corneal surface shapes and refractive powers after photorefractive keratectomy(PRK).
目的探讨准分子激光屈光性角膜切削术（PRK）后角膜表面形态和屈光力变化。
ObjectiveTo investigate the change in corneal surface shapes and refractive powers after photorefractive keratectomy(PRK).
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