Inferior View of the Optic Radiation With Measurements. A–B, The distance between temporal pole (TePo) and the anterior edge of the Meyer loop. C–D, Distance between the anterior wall of temporal horn and the anterior edge of the Meyer loop. E–F, Distance between the anterior edge of the Meyer loop and the lateral geniculate body (LatGeBo). G–H, distance between the lateral geniculate body and the lateral edge of the optic radiation. I–J, Distance between the cortical surface of the middle temporal gyrus and lateral edge of the optic radiation. K–L, Length of the optic radiation. (Image courtesy of E de Oliveira)