The human electroretinogram: DC recordings at low and conventional stimulus intensities. Description of a new method for clinical use

The present paper describes in detail a new method developed for d.c. registration of the human ERG. In this way it was possible to investigate retinal functions that have not earlier been studied clinically, e.g. the retinal responses below the b-wave threshold, the c-wave and other slow potentials after cessation of the light stimulus. It is suggested that the method might lead to an earlier diagnosis than before of certain retinal and pigment epithelial disorders induced by drugs or based on other pathological conditions.