目的：比较飞秒激光小切口角膜基质透镜取出术(SMILE)与飞秒激光辅助准分子激光原位角膜磨镶术(FS-LASIK)术后角膜上皮厚度(CET)的变化特点。

方法：收集2022-12/2023-11在乌鲁木齐爱尔眼科医院接受屈光手术患者187例187眼。按手术方式分为SMILE组110例110眼和FS-LASIK组77例77眼。应用眼前节光学相干断层扫描技术(OCT)分别于术前和术后1 wk，1、3、6 mo测量患者的CET。

结果：比较术后6 mo时角膜中央区、旁中央区、中周区角膜上皮厚度变化量(△CET)，SMILE的特点为中央区增厚最明显，中周区上皮最少； FS-LASIK的特点为旁中央区增厚最明显，中周区最少。术后1 wk，1、3、6 mo时SMILE与FS-LASIK组角膜0-7 mm范围的平均ΔCET与术前等效球镜均具有相关性。

结论：SMILE和FS-LASIK术后6 mo内上皮增厚程度随时间变化有相似的趋势和不同的特点，二者△CET均与术前等效球镜正相关。

METHODS: A total of 187 patients(187 eyes)who underwent either SMILE or FS-LASIK at Urumqi Aier Eye Hospital between December 2022 and November 2023 were collected. The patients were divided into SMILE group and FS-LASIK group according to surgical methods. The CET of the patients was measured by optical coherence tomography(OCT)system before surgery and at 1 wk, 1, 3, and 6 mo postoperatively.

RESULTS: Changes in corneal epithelial thickness(△CET)in the central, paracentral, and mid-peripheral regions were compared at 6 mo postoperatively. The SMILE group was characterized by the most significant thickening in the central area and the least thickening in the mid-peripheral area; while the FS-LASIK group was characterized by the most significant thickening in the paracentral area and the least thickening in the mid-peripheral region. At 1 wk, 1, 3, and 6 mo postoperatively, within the 0-7 mm corneal area, the △CET for both the SMILE and FS-LASIK groups was correlated with the preoperative spherical equivalent.

CONCLUSION: Within 6 mo postoperatively, both SMILE and FS-LASIK showed a similar trend in epithelial thickening but with distinct characteristics. The change in corneal epithelial thickness for both procedures was positively correlated with the preoperative diopter.