 The visual system refers to the part of the central nervous system that allows an organism to see.It interprets information from visible light to build a representation of the world.The ganglion cells of the retina project in an orderly fashion to the lateral geniculate nucleus of the thalamus and from there to the primary visual cortex(V1); adjacent spots on the retina are represented by adjacent neurons in the lateral geniculate nucleus and the primary visual cortex.