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目的分析探讨LASEK术后造成屈光回退的相关因素。方法对接受LASEK治疗的近视138例(270眼)进行回顾性分析,分析内容包括性别、年龄、术前术后屈光度、术前角膜厚度、角膜曲率、术中消融深度、光学区直径及术后反应和眼压情况。结果屈光回退>-1D者14例(23眼),回退发生率为8.51%,回退等效球镜度数-1.25～-3.75D,平均(-2.35±1.12)D;回退发生多在术后6个月内,回退发生与术前屈光度、术中消融深度及术后haze反应有密切关系,术前近视度数越高,术中消融深度越深者,术后回退发生率越高,在超高度近视组,术后屈光回退发生率达19.4%,而与年龄、性别、术前角膜厚度及术前角膜曲率无明显关系。结论LASEK术后屈光回退主要发生在超高度近视组,因此,对于角膜厚度足够的高度近视患者目前仍建议LASEK不作为首选术式。
Objective To analyze the related factors of refractive regression caused by LASEK. Methods Retrospective analysis of 138 cases (270 eyes) of myopia treated with LASEK included gender, age, preoperative and postoperative refractive power, preoperative corneal thickness, corneal curvature, intraoperative ablation depth, optical zone diameter and postoperative Response and intraocular pressure conditions. Results There were 14 cases (23 eyes) in -1D and 8.51% in regression. The spherical equivalent degrees of retrograde regression were -1.25 ~ -3.75D, mean (-2.35 ± 1.12) D; the regression occurred More within 6 months after operation, the regression occurred with preoperative refraction, intraoperative ablation depth and postoperative haze reaction are closely related to the higher the preoperative myopia, the depth of intraoperative ablation deepen, postoperative regression occurred The higher the rate in the ultra-high myopia group, postoperative refractive regression rate of 19.4%, but with age, gender, preoperative corneal thickness and preoperative keratometry no significant relationship. Conclusions The refractive regression of LASEK mainly occurs in the super-high myopia group. Therefore, LASEK is not recommended as the preferred surgical method in patients with high myopia with adequate corneal thickness.