Early neurosensory visual development of the fetus and newborn.
Neurosensory development of the visual system has its origins long before birth. The genetic processes of basic structure formation are followed by endogenous retinal ganglion cell activation in the form of spontaneous synchronous waves of stimulation. These waves of stimulation are required to establish the topographic relationship among retina, lateral geniculate nucleus, and visual cortex. This process prepares the visual system for visual experience. Visual experience ultimately stimulates creation of columns of neurons in the visual cortex, which are needed to see and interpret patterns, lines, movement, and color. Spontaneous synchronous retinal waves occur in preterm infants in the neonatal intensive care unit and must be protected, as they are critical for visual development.
Department of Community and Family Health, College of Public Health, University of South Florida, 13201 Bruce B. Downs Boulevard, MDC 56, Tampa, FL 33612, USA. sgraven@hsc.usf.edu
Stanley N
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Graven
D005314:Embryonic and Fetal Development / Q000502:physiology*; D005123:Eye / Q000196:embryology*; D005333:Fetus / Q000196:embryology*; D006801:Humans; D007231:Infant, Newborn / Q000502:physiology*; D014793:Visual Cortex / Q000196:embryology*; D014795:Visual Pathways / Q000196:embryology*