视觉诱发电位在儿童视觉发育评估中的研究进展

Visual assessment with visual evoked potential for children

视觉诱发电位是视网膜受闪光或图形刺激后经视路传递，在头颅皮肤表面记录到大脑皮层视中枢对视觉刺激发生反应的一簇电信号，又称皮层视觉诱发电位。由于不受被检者认知能力及配合能力限制，可以客观反应视觉系统以及脑系统功能，适用于幼小儿童、意识丧失的患者、伪盲者以及术中检查。本研究就视觉诱发电位的理论基础、检查过程中所需参数以其在临床应用于客观视力的评估等方面进行综述。

Visual evoked potential （VEP） is an evoked response recorded from the visual cortex. It is sometimes known as visual evoked cortical potential （VECP）, evoked by a changing visual stimulus like flash or pattern when retina was stimulated. VEP can objectively reflect the func- tion of visual system and brain system and is specially suitable for visual assessment of children since it is seldom influenced by acknowledge or coorperation. The ationale, parameter and clinical application of VEP in visual assesment was reviewed in this article.