The Relationship Between ERG and VER

摘要

From a comparison between local cone-ERG’s and VER’s, elicited with disc and ring stimuli, it appeared, that 1. the local cone ERG is highest in the macular region, because it is only dependent on the number of cones stimulated. 2. The VER, too, is mainly determined by the central retinal area. Apart from the high cone density in the macular region this is also due to the fact, that the contribution of the central cones is higher than that of the peripheral cones. This is caused partly through the convergence of the extrafoveal cones in the ganglion cells, partly through the localisation of the retinal projection in the area stri