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治疗性光学角膜切削术（ｐｈｏｔｏｔｈｅｒａｐｅｕｔｉｃｋｅｒａｔｅｃｔｏｍｙ，ＰＴＫ）主要用于治疗角膜表层病变，包括角膜瘢痕、变性、营养不良、复发性上皮糜烂、持续性上皮缺损及静止性单疱性角膜炎等，与传统的治疗方法相比，具有安全、简便、疗效可靠等优点，这部分患者还可避免进行角膜移植。ＰＴＫ是在有病变的角膜上进行，手术方法与ＰＲＫ有所不同，如多数患者可不去除上皮，直接在角膜上进行切削；将表面调整剂滴在凸凹不平的角膜表面上，再进行切削可获得较为光滑的表面；采用二次切削的方法，修正角膜变平后所引起的远视等。本文就ＰＴＫ的特征、治疗对象、方法、术后处理、并发症及其存在问题和前景等方面进行综述。
Phototherapeutic focusctomy (PTK) is mainly used for the treatment of corneal surface lesions, including corneal scars, degeneration, malnutrition, recurrent epithelial erosions, persistent epithelial defects and static unilateral vesicular keratitis, etc., compared with the traditional Compared with the treatment, with safety, simplicity, efficacy and other advantages, this part of patients can avoid the corneal transplantation. PTK is in the cornea with lesions, surgery and PRK different methods, such as the majority of patients can not remove the epithelium, cutting directly in the cornea; the surface conditioner drops on the uneven corneal surface, and then cut available A more smooth surface; the use of secondary cutting method, correcting corneal flattening caused by hyperopia. This article reviews the characteristics of PTK, the treatment object, methods, postoperative management, complications, its existing problems and prospects.