The authors present the results of clinical catamnestic, clinical neurologic analysis, and of specific neurophysiologic examinations of 292 patients with a history of slight craniocerebral injuries. Late sequelae of these injuries were detected in 70% of the examinees. The criteria and factors of decompensation risk were defined on the basis of the total and clinical structure of the disease, history of the injury, variation pulsometry, bioelectric reactivity, and visual analyzer adaptation function. The data may be used in prophylactic work to predict the course of these sequelae and for secondary prevention.