LASIK手术前后视功能的对比研究

Comparative study of myopic visual functions before and after laser in situ keratomileusis

目的观察LASIK手术前、后患者视功能的变化,探讨屈光手术本身对屈光不正者视功能是否有影响。方法随机选取LASIK手术33例患者,采用视功能检测软件对患者手术前、后的视功能进行采集(视觉噪声、位置噪声、轮廓整合),分别进行配对t检验以了解LASIK手术本身是否对患者的这3项视功能产生影响。结果视觉噪声:LASIK术前(9.12±0.71),术后(9.03±0.82),差异无统计学意义(P>0.05);位置辨别:术前(5.56±1.76),术后(5.82±1.64),差异无统计学意义(P>0.05);轮廓整合:术前(4.27±0.76),术后(4.74±0.44),差异有统计学意义(P<0.01)。结论LASIK手术对近视患者高级视功能中的视觉噪声、位置噪声无影响,但是对轮廓整合能力有改善作用。

Objective To investigate the change of myopic visual functions before and after laser in situ keratomileusis （LASIK）, study whether refractive surgery have effect on visual functions of myopes. Methods Thirty three subjects were randomly chosen and three types of visual functions were assessed by application of software, such as visual noise, orienfion discrimination and contour integration. Then all datum were analyzed by paired t-test to study whether LASIK have effect on the patients＇ visual functions. Results There were no significant differences between pre-LASIK （9.12±0.71,5.56±1.76） and post-LASIK （9.03±0.82,5.82±1. 64） in visual noise and orientation discrimination （ P 〉 0.05 ）, and significant differences were shew pre-LASIK （ 4.27±0.76 ） and post-LASIK （4.74±0.44） in contour integration （ P 〈 0.01 ） .Conclusion No obvious changes were found in visual noise and orientation discrimination before and after LASIK, but LASIK could improve the contour integration of myopes.