| 网站首页 | 眼科中心 | 协和眼科 | 会议中心 | 医学资源 | 精美图片 | 眼科宝贝 | 协和论坛 | 淘宝网店 | 会员中心 | 帮助中心 | 金币换眼科点 | 申请专业权限 | 
最新公告:     本站新域名:http://www.eyecn.net  [毛进  2006年5月29日]        
您现在的位置: 眼科医生网 >> 会议中心 >> 第11届全国会 >> 视觉科学与视觉生理11 >> 正文
专题栏目
更多内容
相关文章
更多内容
The pattern electroretinogram: a clinical perspective         
The pattern electroretinogram: a clinical perspective
作者:Graham E… 文章来源:Moorfields Eye Hospital, London, UK 点击数: 更新时间:2006-7-6 19:51:11
The pattern electroretinogram (PERG) is the retinal response evoked by a structured stimulus, usually a reversing black and white checkerboard. It allows both objective evaluation of macular function and a direct assessment of retinal ganglion cell function. There are two main components to the normal PERG: a positive component (P50) at approximately 50ms, and a larger negative component (N95) at approximately 95ms. The exact origins of the PERG have yet to be fully ascertained, but it currently appears that N95 and ~70% of P50 arise in relation to ganglion cell function, but that some of P50 arises more distally. There is overall reduction of the PERG in macular dysfunction, with both P50 and N95 being reduced or undetectable. In contrast, ganglion cell dysfunction, either primary or consequent upon retrograde degeneration from an optic neuropathy, may selectively affect the N95 component. The PERG therefore facilitates an improved interpretation of the cortical visual evoked potential (VEP) evoked by a similar stimulus. The combined clinical use of the PERG with ERG and/or VEP will be discussed in relation to an integrated approach to diagnosis.
会议投稿录入:chenyouxin    责任编辑:毛进 
  • 上一篇会议投稿:

  • 下一篇会议投稿:
  • 【字体: 】【发表评论】【加入收藏】【告诉好友】【打印此文】【关闭窗口
      网友评论:(只显示最新10条。评论内容只代表网友观点,与本站立场无关!)

    | 设为首页 | 加入收藏 | 联系站长 | 友情链接 | 版权申明 |
    眼科医生网 眼科医生网版权所有 @ 1998-2008
    部分文章和资源来源于网络,如果侵犯了您的版权,请指出! 站长:毛进
    信息产业部备案
    *京ICP备05085871