摘要
目的确定多焦视网膜电图(ERG)的正常值和分析不同部位视网膜刺激反应密度的差异,为客观评价后极部视网膜病变的功能提供参考依据。方法Veris视网膜功能分析仪检查19例(38眼)扩瞳正常眼,对后极部视网膜局部反应振幅和潜伏期进行分析。结果正常眼黄斑区中央3°内多焦视网膜电图检查局部反应密度振幅高,后极部视网膜局部分析表明多焦视视网膜电图a、b、c波振幅和潜伏期有不同程度的差异。结论正常眼视网膜后极部由于感光细胞解剖分布的不同。
ObjectiveTo confirm the normal values of multifocal electroretinogram (ERG) and investigate inter individual variation of different local retinal response densities,and to provide a foundation of objective functional evaluation for retinal diseases.Methods38 normal eyes(19 cases)were examined with Veris retinal function analyzer.Response values and latency were statistically analysed in trace responses,4 quadrant groups and 6 concentric rings.ResultsThe response densities in multifocal ERG were high within 3° of the macular region in normal eyes,and were especially higher at the macular fovea.There were some differences in response amplitude and latency of a,b,c wave in the posterior retinal area.ConclusionThe differences in normal response densities in multifocal ERGs might be caused by a different distribution of retinal sensor cells.
出处
《眼科研究》
CSCD
1999年第1期47-50,共4页
Chinese Ophthalmic Research