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准分子激光角膜切削术（即ＰＲＫ）是当前眼科屈光治疗的主流，其具有的安全性高、可预测性强等特点，使越来越多的近视、散光患者对其加以关注。本文将阐述准分子激光角膜屈光治疗系统的实现原理，并进一步介绍 ＶＩＳＸ ２０／２０型准分子激光治疗系统的一些特点。
Excimer laser keratectomy (PRK) is currently the mainstream of ophthalmic refractive therapy. Its high safety and predictability make more and more patients with myopia and astigmatism pay attention to it. This article will explain the implementation principle of the excimer laser corneal refractive treatment system and further introduce some features of the VISX 20/20 excimer laser treatment system.