PDF(Pubmed)
Abstract：
OBJECTIVE: To investigate the size of functional optical zone (FOZ) after small incision lenticule extraction (SMILE) versus femtosecond laser assisted excimer laser keratomileusis (FS-LASIK) for myopia correction and potential associated factors for FOZ.
METHODS: A total of 133 patients who received corneal refractive surgery in our hospital between November 2018 and July 2021 were retrospectively enrolled. There were 63 patients (123 eyes) in SMILE group and 70 patients (139 eyes) in FS-LASIK group. The size of FOZ was measured using Pentacam 3-dementional anterior segment analyzer before and 3mo after surgery, so as to analyze postoperative achieved functional optical zone (AFOZ) and its contributing parameters.
RESULTS: When planned functional optical zone (PFOZ) was 6.5 mm for both groups, AFOZ was 1.45±0.27 and 1.67±0.25 mm smaller than preoperative FOZ in SMILE group and FS-LASIK group 3mo after surgery. AFOZ in SMILE group was significantly larger than that in FS-LASIK group (P<0.001). Variation of FOZ was negatively correlated with preoperative spherical equivalent (SE) and positively correlated with variation of mean keratometry value (ΔKm), variation of spherical aberration (ΔSA), and variation of Q-value (ΔQ, all P<0.001) in both groups. Multiple variable linear regression equations were ΔFOZ=1.354-0.1×pre-SE+0.336×ΔQ+1.462×ΔSA in SMILE group and ΔFOZ=1.512+0.137×ΔQ+0.468×ΔSA in FS-LASIK group.
CONCLUSIONS: AFOZ is significantly smaller than preoperative FOZ in both SMILE and FS-LASIK groups. With the same PFOZ, larger AFOZ is achieved in SMILE group than in FS-LASIK group.
METHODS: A total of 133 patients who received corneal refractive surgery in our hospital between November 2018 and July 2021 were retrospectively enrolled. There were 63 patients (123 eyes) in SMILE group and 70 patients (139 eyes) in FS-LASIK group. The size of FOZ was measured using Pentacam 3-dementional anterior segment analyzer before and 3mo after surgery, so as to analyze postoperative achieved functional optical zone (AFOZ) and its contributing parameters.
RESULTS: When planned functional optical zone (PFOZ) was 6.5 mm for both groups, AFOZ was 1.45±0.27 and 1.67±0.25 mm smaller than preoperative FOZ in SMILE group and FS-LASIK group 3mo after surgery. AFOZ in SMILE group was significantly larger than that in FS-LASIK group (P<0.001). Variation of FOZ was negatively correlated with preoperative spherical equivalent (SE) and positively correlated with variation of mean keratometry value (ΔKm), variation of spherical aberration (ΔSA), and variation of Q-value (ΔQ, all P<0.001) in both groups. Multiple variable linear regression equations were ΔFOZ=1.354-0.1×pre-SE+0.336×ΔQ+1.462×ΔSA in SMILE group and ΔFOZ=1.512+0.137×ΔQ+0.468×ΔSA in FS-LASIK group.
CONCLUSIONS: AFOZ is significantly smaller than preoperative FOZ in both SMILE and FS-LASIK groups. With the same PFOZ, larger AFOZ is achieved in SMILE group than in FS-LASIK group.
摘要：
目的：探讨小切口微透镜摘除术(SMILE)与飞秒激光辅助准分子激光角膜磨镶术(FS-LASIK)矫正近视后光学功能区(FOZ)的大小及影响因素。
方法：回顾性纳入2018年11月至2021年7月在我院接受角膜屈光手术的133例患者。SMILE组63例(123只眼),FS-LASIK组70例(139只眼)。手术前和手术后3mo使用Pentacam3-dementional眼前节分析仪测量FOZ的大小，从而分析术后功能光学区（AFOZ）及其贡献参数。
结果：当两组的计划功能光学区（PFOZ）为6.5mm时，术后3mo，SMILE组和FS-LASIK组的AFOZ分别比术前FOZ小1.45±0.27和1.67±0.25mm。SMILE组AFOZ显著大于FS-LASIK组(P<0.001)。FOZ的变异与术前等效球度（SE）呈负相关，与角膜曲率测量平均值（ΔKm）的变异呈正相关。球差变化(ΔSA)，和Q值的变化(ΔQ，两组均P<0.001)。SMILE组的多变量线性回归方程为ΔFOZ=1.354-0.1×pre-SE0.336×ΔQ1.462×ΔSA，FS-LASIK组的ΔFOZ=1.5120.137×ΔQ0.468×ΔSA。
结论：SMILE组和FS-LASIK组的AFOZ明显小于术前FOZ。同样的PFOZ,SMILE组比FS-LASIK组获得更大的AFOZ。
方法：回顾性纳入2018年11月至2021年7月在我院接受角膜屈光手术的133例患者。
结果：当两组的计划功能光学区（PFOZ）为6.5mm时，
结论：SMILE组和FS-LASIK组的AFOZ明显小于术前FOZ。
