频闪视网膜电图的振荡电位。
Oscillatory potentials with repeated-flash electroretinography.
机构信息
Department of Ophthalmology, Kinki University School of Medicine, Osaka, Japan.
出版信息
Jpn J Ophthalmol. 2010 Jan;54(1):32-5. doi: 10.1007/s10384-009-0752-x. Epub 2010 Feb 12.
PURPOSE
To study the influence of retinal adaptation on oscillatory potential (OP) using repeated-flash electroretinography.
METHODS
Subjects were 28 adult eyes with normal retinas. Four stimuli (four flashes) of white light from a light-emitting diode built into a contact lens that also served as the recording electrode were presented at 5-s intervals after 30 min of dark adaptation (DA) and then after 10 min of light adaptation (LA). Recordings were made without background light.
RESULTS
Four OPs (O1, O2, O3, and O4) were recordable. After DA, amplitudes of O1 and O4 decreased with subsequent flashes, whereas those of O2 increased after the second flash. After LA, amplitudes of O3 and O4 were smaller than after DA.
CONCLUSIONS
Amplitude and implicit time of OPs were influenced by retinal adaptation. Among all OPs, O2 showed unique characteristics in course of retinal adaptation.
目的
使用重复闪光视网膜电图研究视网膜适应对振荡电位（OP）的影响。
方法
研究对象为 28 只正常视网膜的成年眼睛。在暗适应（DA） 30 分钟后，以 5 秒的间隔，通过集成在接触镜中的发光二极管（也作为记录电极）呈现四个白光刺激（四个闪光），然后进行 10 分钟的光适应（LA）。记录在没有背景光的情况下进行。
结果
可以记录到四个 OP（O1、O2、O3 和 O4）。在 DA 后，O1 和 O4 的振幅随着后续闪光而减小，而 O2 的振幅在第二次闪光后增加。在 LA 后，O3 和 O4 的振幅小于 DA 后。
结论
OP 的振幅和潜伏期受视网膜适应的影响。在所有 OP 中，O2 在视网膜适应过程中表现出独特的特征。
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