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图形视网膜电流图(Pattern electroretinogram,简称P-ERG)是通过呈周期性翻转的黑白光栅或棋盘方格图形刺激所诱发的后极部视网膜的综合电反应。Riggs等(1964)为了克服光线在眼内的弥散所引起电活动的影响,首次采用光栅图形作为刺激而诱发出这一P-ERG反应。Lawwill(1974)则首先将这种方法应用于临床。由于
The pattern electroretinogram (P-ERG) is a complex electrical reaction of the posterior pole retina induced by periodically reversing black-and-white grayscale or checkerboard patterning. Riggs et al. (1964) induced the P-ERG response for the first time using a grating pattern as a stimulus in order to overcome the electrical activity induced by diffuse light in the eye. Lawwill (1974) first applied this method to the clinic. due to