Biomicroscopy of bulbar conjuctiva as well as oencephalography were quite informative for discovery of subclinical manifestations of disorders of cerebral circulation (DCC). That conclusion resulted from the observation of 133 patients with early Corms of vascular pathology of brain. Besides, to find the early signs, it was also worth while to perform some biochemical studies (coagulogram, studies of both theologic properties and lipids of blood). In order to establish discirculatory encephalopathy it was also expedient to use ultrasonic dopplerography and electroencephalography. Efficiency of some medical prophylactic measures (normalization of the diet, weight, muscular activity, administration of antiatherosclerotic drugs) that prevented the progression of aorta's stenosis was also demonstrated.