摘要目的:比较应用1 050 Hz切削频率和智能脉冲技术(SPT)的经上皮准分子激光屈光性角膜切削术(TransPRK)和飞秒激光小切口角膜基质透镜取出术(SMILE)矫正近视和散光的临床效果。方法:采用队列研究方法，纳入2017年8月至2018年4月在成都中医大银海眼科医院拟行TransPRK的近视散光患者43例85眼和拟行SMILE的近视散光患者46例85眼。术后随访6个月，观察术眼手术前后各时间点视力、屈光度、等效球镜度(SE)变化，评估手术安全性。结果:TransPRK术后各时间点屈光度趋向正视状态并相对稳定。SMILE术后早期屈光度呈轻度远视，术后6个月由轻度远视转为正视。术前与术后各时间点2个组间术眼SE比较差异均无统计学意义(均 P>0.05)。术后6个月TransPRK组和SMILE组术眼有效性指数分别为1.189±0.248和1.120±0.205，差异无统计学意义( t＝1.862， P＝0.065)。术后7 d及1个月SMILE组术眼裸眼视力(UCVA)明显优于TransPRK组，差异均有统计学意义(均 P<0.05)，术后3个月和6个月2个组间UCVA比较差异均无统计学意义(均 P>0.05)。术后6个月TransPRK组术眼安全性指数为1.209±0.222，明显高于SMILE组的1.143±0.178，差异有统计学意义( t＝2.024， P＝0.045)。 结论:采用SPT的TransPRK和SMILE矫正近视和散光均有良好的预测性、稳定性、安全性和有效性，TransPRK安全性指数高于SMILE，SMILE术后早期视力恢复早于TransPRK，但2种手术术后术眼远期视力均较好。

abstractsObjective:To compare the clinical outcome of transepithelial photorefractive keratectomy (TransPRK) using 1 050 Hz ablation frequency and intelligent pulse technique (SPT) and small incision lenticule extraction (SMILE) for myopia and astigmatism.Methods:A cohort study was performed.Eighty-five eyes of 43 patients who received TransPRK for myopia and 85 eyes of 46 patients who received SMILE for myopia in the Ineye Hospital of Chengdu University of TCM were enrolled from August 2017 to April 2018.The follow-up duration was 6 months.The changes of visual acuity and diopter were observed and compared before and after operation, and the predictability, stability, safety, effectiveness and long-term vision were compared between the different surgeries.This study complied with the Declaration of Helsinki and the study protocol was approved by the Ethics Committee of Ineye Hospital of Chengdu University of TCM.Results:The refractive power tended to be emmetropic and relatively stable in the TransPRK group, and the refraction varied from mild hyperopia to emmetropic gradually during 6 months after SMILE.There was no significant difference in the spherical equivalent (SE) between the two groups before and after operation (all at P>0.05). No significant difference was found in mean validity index between the two groups at 6 months after surgery (1.189±0.248 vs.1.120±0.205; t=1.862, P=0.065). The uncorrected visual acuity (UCVA) in the SMILE group was significantly higher than that in the TransPRK group at 7 days and 1 month after surgery ( P<0.05), and there was no significant difference in UCVA between the two groups at 3 months and 6 months after surgery ( P>0.05). The safety index at 6 months after surgery in the TransPRK group was 1.209±0.222, which was significantly higher than 1.143±0.178 in the SMILE group, with a significant difference between the two groups ( t=2.024, P=0.045). Conclusions:The predictability, stability, safety, effectiveness and long-term vision are good after TransPRK with SPT and SMILE for myopia and astigmatism.The safety index is better in TransPRK compared with SMILE, and the restoration of vision is faster after SMILE than that after TransPRK.