The term superior optic radiation refers to the more dorsal of two portions of the optic radiation; the other is the inferior optic radiation. The superior portion projects almost directly from the lateral geniculate nucleus to the superior bank of the calcarine fissure, the lower border of the precuneus. Found in the human and the macaque, it conveys information from the superior part of the retina, which 'sees' the lower part of the visual field ( Crosby-1962; Carpenter-1983 ).