目的：分析飞秒激光制瓣的准分子激光原位角膜磨镶术(FS-LASIK)与智能脉冲技术辅助经角膜上皮准分子激光角膜切削术(SMART)手术前后客观视觉质量的变化情况。

方法：前瞻性研究。收集2018-10/2018-12在我院眼科行FS-LASIK术和SMART术的患者各50例100眼，手术前后使用OQAS客观视觉质量分析系统测量两组患者的客观散射指数(OSI)、调制传递函数截止频率(MTF cut off)和斯特列尔比(SR)等客观视觉质量指标。

结果：与术前相比，术后1、3mo两组患者OSI均升高，MTF cut off和SR均降低(P<0.05)。术前、术后1mo，两组患者客观视觉质量指标均无差异(P>0.05)，但术后3mo FS-LASIK组患者OSI高于SMART组(0.88±0.28 vs 0.70±0.27，P<0.001)，SR低于SMART组(0.21±0.05 vs 0.24±0.05，P=0.002)。

结论：FS-LASIK与SMART术后均会造成眼内散射指数的升高及客观视觉质量的降低，但SMART术后视觉质量总体较FS-LASIK术后恢复更好，长期视觉质量更占优势。

METHODS: Prospective study. We collected 50 cases(100 eyes)treated with FS-LASIK(FS-LASIK group)and another 50 cases(100 eyes)treated with SMART(SMART group)from the Ophthalmology Department of our hospital between October 2018 and December 2018 using Optical Quality Analysis System(OQAS)to measure objective scatter index(OSI), modulation transfer function cut off frequency(MTF cut off), strehl ratio(SR)before and after surgery.

RESULTS: In the FS-LASIK and SMART groups, the OSI values were higher in the 1 and 3mo after surgery, whereas the MTF cut off and SR were lower in the 1 and 3mo after surgery(P<0.05). There was no statistical difference between the two groups in the objective visual quality index before and after 1mo(P>0.05). However, after 3mo, the OSI value of the FS-LASIK group was higher than the SMART group(0.88±0.28 vs 0.70±0.27, P<0.001), whereas the SR was lower than SMART group(0.21±0.05 vs 0.24±0.05, P=0.002).

CONCLUSION: Both FS-LASIK and SMART caused an increase in the intraocular scattering index and a decrease in objective visual quality. However, the visual quality of the SMART group was generally better than that of the FS-LASIK group, and long-term visual quality was more dominant.