1. An apparatus for the analysis of retinal vessels comprising: a retinal camera for recording images of the ocular fundus; at least one image storage; means for detecting arterial and venous vessels in the images; means for determining the vessel diameters of the detected arterial and venous vessels; means for determining artery-to-vein ratios from the determined vessel diameters; said retinal camera being connected to an image sequence control unit which carries out a control of the time intervals or times which is adapted to the period of vasomotor waves and a control of the quantity of images of a sequence of images to be recorded for which an image sequence storage is provided for storing images; and said means for determining artery-to-vein ratios being designed to determine a mean artery-to-vein ratio from artery-to-vein ratios which are determined from at least two images of an image sequence.