视网膜电图在视网膜分支静脉阻塞分型中的应用价值

The applied value of electroretinogram in typing of branch retinal vein occlusion

目的探讨根据视网膜电图（ｅｌｅｃｔｒｏｒｅｔｉｎｏｇｒａｍ，ＥＲＧ）对视网膜分支静脉阻塞（ｂｒａｎｃｈｒｅｔｉｎａｌｖｅｉｎｏｃｃｌｕｓｉｏｎ，ＢＲＶＯ）分型的可能性。方法根据眼底荧光血管造影（ｆｕｎｄｕｓｆｌｕｏｒｅｓｃｅｉｎａｎｇｉｏｇ－ｒａｐｈｙ，ＦＦＡ）将ＢＲＶＯ分为缺血型及非缺血型，同时行ＥＲＧ检查，测ａ、ｂ波振幅、峰潜时及ｂ／ａ波振幅比值和振荡电位：ＯＰ１、ＯＰ２、ＯＰ３、ＯＰ４振幅、峰潜时及ＯＰ１＋ＯＰ２＋ＯＰ３＋ＯＰ４的振幅之和ＯＰｓ波的振幅。结果ＢＲＶＯ缺血型组ｂ波及ＯＰｓ振幅明显下降，缺血组与非缺血型组之间有显著差异。结论ＥＲＧｂ波及ＯＰｓ振幅下降可作为缺血型的一项参考指标。

Objective To probe the possibility of electroretinogram(ERG)maximum combined response for typing branch retinal vein occlusion(BRVO). Methods BRVO were divided into ischemic or nonischemic type according to the appearance of fundus fluorescein angiography.The ERG data were used to define the retinl function:a,b wave amplitude and impact time,b/a wave ratio,oscillatory potential OP 1,OP 2,OP 3,OP 4 amplitude implicit time and Ops amplitude. Results The ERG b wave and OPs amplitude were significantly lower in ischemic group than those in nonischemic group. Conclusion With the REG test,the decline of b wave and OPs amplitude of the maximum combined response might be as a reference of ischemic type BRVO.