With the increasing progress of cataract surgery, the postoperative residualastigmatism has become one of the factors that influences the desirable refractive outcome for patient.
随着白内障手术的日臻完美，术后残留散光逐渐成为影响患者获得理想屈光状态的主要原因之一。
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Objective:To evaluate the predictability, stability and safety of excimer laser photorefractive keratectomy (PRK) for correcting the residual myopia and astigmatism after keratotomy (RK).