遗传性视网膜劈裂症的多焦视网膜电图改变

目的应用多焦视网膜电图对正常对照 眼和视网膜劈裂眼进行检测并比较两者之间的差异。 方法用VERIS Science^TM 4.0视诱发反应图像系统对19例(21只眼)正常对照者和8例 (15只眼)视网膜劈裂者进行检测，并用全视野视网膜电图 (electroretinogram,ER G) 对其中3例 (6只眼) 视网膜劈裂者进行检测。结果正常对照组和视网膜劈裂组6个环形视网膜区域平均反应密度值或潜伏期比较均显示差异有非常显著性的意义，视网膜劈裂患者多焦ERG三维图皆表现为多处局部性振幅降低，中央高峰反应消失或降低，其6个环形视网膜区域反应密度值的P₁/N₁波比值不同于全视野ERG的b/a波比值。 结论多焦ERG和全视野ERG对视网膜劈裂的诊断各有其优点。(中华眼底病杂志,2001,17:268-270)

The multifocal electroretinogram in inherited retinoschisis

Objective To measure and compare the difference between the normal control and retinoschisis with multifocal electroretinography. Methods Nineteen cases (21 eyes) of normal control and 8 cases (15 eyes) of inherited retinoschisis were measured with VERIS Science TM 4.0. Three cases (6 eyes) of inherited retinoschisis were tested with Ganzfeld ERG. Results There was statistically significant difference of average response density and latencies in all 6 ring retinal regions between the normal control and retinoschisis. The topography of multifocal ERG showed that multifocal amplitude decreased with disappearing or decreasing of central peak amplitude in patients with retinoschisis. The P 1/N 1 ratio of the multifocal ERG average response densities in 6 ring retinal regions was different from the b/a ratio of the Ganzfeld ERG. Conclusion Each of the multifocal ERG and Ganzfeld ERG has its advantage in the diagnosis of the retinoschisis.