Röver J, Bach M
University Eye Clinic, Freiburg i.Br., West Germany.
Doc Ophthalmol. 1987 Jun;66(3):245-51. doi: 10.1007/BF00145238.
Along the processing chain in the visual pathway the pattern electroretinogram (PERG) is a better indicator of the peripheral function than the visual evoked potential (VEP). Therefore the PERG and the VEP will be impaired equally by disturbances before the ganglion cell layer (e.g., blurred image or retinal disease) and differently by further centrally located diseases (e.g., tumor compression of the optic nerve). Thus in patients complaining of reduced visual acuity who show disturbed VEP but a normal PERG, malingering can be definitely ruled out. Representative combinations of PERG and VEP findings are described.
在视觉通路的处理链中，图形视网膜电图（PERG）比视觉诱发电位（VEP）更能反映周边功能。因此，在神经节细胞层之前的干扰（如图像模糊或视网膜疾病）会同等程度地损害PERG和VEP，而位于更中枢部位的疾病（如视神经肿瘤压迫）对它们的损害则不同。因此，对于主诉视力下降且VEP异常但PERG正常的患者，可以明确排除诈病。文中描述了PERG和VEP检查结果的典型组合。
