CAJ | 학술논문

目的探讨高度近视患者接受波前像差引导LASIK术后2年在暗环境下无眩光、低眩光及高眩光条件下对比敏感度的变化.方法临床病例对照研究.对2009年9月至2010年2月在西安市第四医院眼科接受波前像差引导LASIK手术的高度近视患者19例38只眼作为波前组,同期行常规LASIK手术患者18例36只眼作为对照组.分别对两组术前及术后2年在暗环境下无眩光、低眩光及高眩光条件下各空间频率的对比敏感度标准化Log值(contrast sensitivity function,CSF)比较(主视眼).结果术后波前组除在暗环境高眩光环境下12 CPD、18 CPD频段CSF比较无统计学意义(t=1.689,1.645,P＞0.05),其余各种环境下CSF均增加(P＜0.05),眩光刺激对于波前组术前术后各空间频率的CSF均无影响(P＞0.05);对照组除在暗环境下3 CPD频段及无眩光6 CPD频段CSF差异无统计学意义(t =1.711,1.862,1.902,1.867,P＞0.05),其余各种环境下CSF与术前相比均明显降低差异有统计学意义(P＜0.05);眩光刺激对于对照组术前各空间频率的CSF无影响(P＞0.05);暗环境下高眩光刺激降低了对照组术后12、18 CPD频段CSF差异有统计学意义(t=1.432,1.561,P＜0.05).结论高度近视患者,波前像差引导的LASIK手术后2年暗环境下CSF优于常规LASIK对照组,且较术前略有增加;眩光刺激对于波前像差引导的LASIK手术前后各空间频率的CSF无影响,暗环境下高眩光刺激可影响常规LASIK对照组术后中高频段的CSF.
목적 탐토고도근시환자접수파전상차인도LASIK술후2년재암배경하무현광、저현광급고현광조건하대비민감도적변화.방법 림상병례대조연구.대2009년9월지2010년2월재서안시제사의원안과접수파전상차인도LASIK수술적고도근시환자19례38지안작위파전조,동기행상규LASIK수술환자18례36지안작위대조조.분별대량조술전급술후2년재암배경하무현광、저현광급고현광조건하각공간빈솔적대비민감도표준화Log치(contrast sensitivity function,CSF)비교(주시안).결과 술후파전조제재암배경고현광배경하12 CPD、18 CPD빈단CSF비교무통계학의의(t=1.689,1.645,P＞0.05),기여각충배경하CSF균증가(P＜0.05),현광자격대우파전조술전술후각공간빈솔적CSF균무영향(P＞0.05);대조조제재암배경하3 CPD빈단급무현광6 CPD빈단CSF차이무통계학의의(t =1.711,1.862,1.902,1.867,P＞0.05),기여각충배경하CSF여술전상비균명현강저차이유통계학의의(P＜0.05);현광자격대우대조조술전각공간빈솔적CSF무영향(P＞0.05);암배경하고현광자격강저료대조조술후12、18 CPD빈단CSF차이유통계학의의(t=1.432,1.561,P＜0.05).결론 고도근시환자,파전상차인도적LASIK수술후2년암배경하CSF우우상규LASIK대조조,차교술전략유증가;현광자격대우파전상차인도적LASIK수술전후각공간빈솔적CSF무영향,암배경하고현광자격가영향상규LASIK대조조술후중고빈단적CSF.
Objective To investigate changes of contrast sensitivity under dark circumstance with or without glare before and after standardized LASIK and wavefront-guided LASIK in high myopic eyes at two years follow up.Methods There were 19 high myopic patients (38 eyes) performed wavefront-guided LASIK as experimental group,the other 18 high myopic patients (36 eyes) performed with standardized LASIK as control group.Contrast sensitivity was detected under photopic and mesopic circumstances.The contrast sensitivity (CS) of patients was measured by CSV-1000E 2 years after the procedure.Changes of contrast sensitivity were compared.Results When tested at dark circumstance with glare background,the CS of 12 and 18 c/d had no significant difference,however,the CS increased under other circumstance after wavefront group.Glare did not have an influence on contrast sensitivity before and after wavefront-guided LASIK group.In control group,the CS of 3 c/d and 6 c/d under dark circumstance without glare background had no significant difference before and after the procedure.While the CS decreased under other circumstance in this group.There was an influence on 12 and 18 c/d under dark circumstance with glare background after standard group.Except there was no difference under dark circumstance without glare background,the contrast sensitivity in the wavefront-guided LASIK group were better than the standard LASIK.There were 38 patients expressing satisfy in wavefront group and 36 patients in control group through the visual quality questionnaire,significant difference was found.Conclusions The contrast sensitivity in the wavefront-guided LASIK group is better than the standard LASIK.Glare do not have an influence on contrast sensitivity before and after wavefront-guided LASIK group,while there is an influence on mesopic and high spatial frequency contrast sensitivity function in dark circumstance after standard group.