[Temporal change of the disc in normal adults (author's transl)].

We have recently proposed a procedure called stereochronoscopy which allows the detection of temporal changes in the disc by stereoscopic observation of exactly centered fundus pictures. We show that this procedure can also be applied in a slightly modified form to fundus pictures that are not specially centered, although with less precision. Using this technique we were able to show on material covering 10 years (50 eyes) that the discs of healthy adults do not as a rule change over a period of at least 8 years. This is valid for observation of the pictures with an overall magnification of X 14.