The term optic radiation refers to a broad vertically oriented fiber pathway that passes from the lateral geniculate nucleus, through the retrolenticular part of the internal capsule and posterior limb of the internal capsule to the primary visual cortex: primary visual cortex and monkey area 17 of Brodmann (guenon) ( Carpenter-1983 ). It is a continuous structure, but two parts are distinguished: a more dorsal superior optic radiation and a more ventral inferior optic radiation ( Crosby-1962 ).