飞秒激光微小切口角膜基质透镜切除术和飞秒激光LASIK近视治疗的双通道系统视觉质量评价

摘要

AIM: To evaluate the visual quality between femtosecond laser small incision lenticule extraction ( SMILE ) and femtosecond laser in situ keratomileusis ( LASIK) in the treatment of myopia. n METHODS:This study comprised 22 eyes (11 patients) underwent SMILE and 43 eyes ( 23 patients ) received LASIK with femtosecond laser to correct myopia and myopic astigmatism. The two groups were recorded bydouble-pass optical quality analysis system ( OQAS) at preoperative and postoperative 1mo. The two groups were compared: modulation transfer function cutoff frequency ( MTF cutoff ) , strehl ratio ( SR ) , objective scattering index ( OSI ) . The early visual quality after operation between two groups were analyzed and evaluated. n RESULTS: The MTF cutoff after operation one month were 34. 835±10. 113c/deg ( SMILE group) and 38. 362±10.623c/deg (LASIK group)(t=0. 925, P=0. 362). The SR after operation one month were 0. 204±0. 077 ( SMILE group) and 0. 218±0. 072 ( LASIK group) ( t=0. 557, P=0.582). The OSI after operation one month were 0. 608±0.291 (SMILE group) and 0. 545±0. 405 (LASIK group) (t=-0. 473, P=0. 640). n CONCLUSION:The double-pass OQAS tell us that there was not statistically significant between femtosecond laser SMILE and femtosecond LASIK in the treatment of myopia.%目的：评价飞秒激光微小切口角膜基质透镜切除术( small incision lenticule extraction,SMILE)和飞秒激光制瓣的准分子激光原位角膜磨镶术( laser in situ keratomileusis, LASIK)治疗近视术后的视觉质量。n　　方法：选取11例22眼近视和近视散光患者为全飞秒组( SMILE组),同期23例43眼飞秒激光制瓣LASIK的近视和近视散光患者为飞秒激光制瓣的 LASIK 组( LASIK组)。使用双通道系统( OQAS )检查、记录两组患者术前及术后1 mo内的结果,对比二者的调制传递函数截止空间频率( modulation transfer function cutoff frequency, MTF cutoff)、斯特列尔比( strehl ratio,SR)和眼内客观散射指数( objective scattering index,OSI),分析并评价两种手术方式术后早期的视觉质量。n　　结果：SMILE组和LASIK组术后1 mo时的MTF cutoff分别为34.835±10.113 c/deg 和38.362±10.623 c/deg ( t =0.925,P=0.362)；SR 分别为0.204±0.077和0.218±0.072(t=0.557,P=0.582)；OSI分别为0.608±0.291和0.545±0.405(t=-0.473,P=0.640)。n　　结论：双通道客观视觉质量分析显示SMILE和飞秒激光LASIK两种术式对视觉质量的影响无明显差异。