视网膜脱离手术前后的多焦视网膜电图比较  

The comparison of multifocal electroretinogram before and after retinal detachment surgery

作　　者：张国明[1] 吴德正[1] 高汝龙[1] 李春芳[1] 张少冲[1] 

机构地区：[1]中山医科大学中山眼科中心,广州510060

出　　处：《中华眼底病杂志》2001年第4期264-267,共4页Chinese Journal of Ocular Fundus Diseases

摘　　要：目的　探讨视网膜脱离手术前后多焦视网膜电图 (multifocal electroretinography,m ERG)的改变及其临床应用价值。　方法　应用 VERIS Science TM 4.0对 18例 (18只眼 )裂孔源性视网膜脱离患者手术前后分别进行 m ERG检查 ,并对不同区域的 m ERG进行了比较。　结果　手术前脱离区 a、b波的潜伏期比非脱离区明显延长 ,差异有显著性的意义 (t=4.5 41、t=6 .784,P<0 .0 1) ,脱离区 a、b波的振幅密度明显小于非脱离区 ,差异有显著性的意义 (t=3.6 80、t=4.2 5 7,P<0 .0 1) ;手术后中心凹、黄斑区、黄斑外区及全测试区的 a、b波的振幅密度均比手术前明显提高 (P<0 .0 1) ,但是 a、b波的潜伏期手术前后则无明显变化 (P>0 .0 5 ) ;手术后原脱离区 a、b波的振幅密度均比术前有明显提高 (P<0 .0 5 )。　结论　视网膜脱离复位术后视网膜功能有一定提高 ,m ERG是评价术后视网膜功能恢复的有用工具 ,振幅密度比潜伏期更敏感。Objective To explore the changes of multifocal electroretinogram (mERG) before and after retinal detachment surgery and its clinical significance. Methods Eighteen patients suffered from rhegmatogenous retinal detachment underwent mERG before and after surgery using VERIS Science TM 4.0. The mERG at different area was compared between preoperative and postoperative surgery. Results Preoperatively, the latencies of a wave and b wave in detached area were statistically longer than in attached area ( t =4.541 and 6.784, P< 0.01). The amplitude densities of a wave and b wave were statistically smaller in detached area than in attached area ( t =3.680 and 4.257, P< 0.01). Postoperatively, the amplitude densities of a wave and b wave at fovea, macula, perimacular area and whole tested area significantly improved. Statistical difference was found before and after surgery, but no statistical difference was found in the latencies of a wave and b wave. The amplitude densities of a wave and b wave in the preoperative detached area were statistically larger after surgery than before surgery ( P< 0.05). Conclusions After retinal detachment surgery, the responses of mERG improve to some degree. mERG was a promising tool to evaluate the recovery of retinal function after surgery. The amplitude densities are more sensitive than the latencies to evaluation of retinal function.

关 键 词：视网膜脱离 视网膜电描记术 多焦视网膜电图 

分 类 号：R770.43[医药卫生—眼科]