Reported are three series of experiments analyzing the development of the visual function of infants. The first experimental series was aimed at the investigation of infants' reaction to moving objects. The second experimental series dealt with the analysis of the development of binocular vision in infants. The goal of the third series was to discover the boundaries and structure of the infant visual field. The fourth series was aimed at testing the mechanism of visual-vestibular interaction in infants. Principal conclusions from the findings suggest: (1) a genetically fixed mechanism that functions adequately from the first weeks of life is responsible for vestibulo-ocular responses (VOR) in infants; (2) vestibular afferentiation mainly triggers smooth eye movements; (3) VOR attain the most stable and smooth character in sleep, that is, when other sensory influences are minimal; (4) the ability to smooth compensatory eye movements and the ability to smooth foveal pursuit of moving objects develop heterochronously and are probably determined by different neurophysiological mechanisms; and (5) the effect of complex visual-vestibular afferentiation depends on age. The older the child, the stronger the influence of visual signals on the integral eye movement response. Theoretical implications of the findings are discussed. (RH)