[关键词]
[摘要]
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。
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1mo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。
结果:SMILE组和LASIK组术后1mo时的MTF cutoff分别为34.835±10.113c/deg和38.362±10.623c/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)。
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。
[Key word]
[Abstract]
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.
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.
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).
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.
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