English: Transformations of the visual field toward the visual map on the primary visual cortex. A point-inversion (mirroring) occurs in the pupil, so that U,D as well as L,R are reversed. A (partial) midline crossing takes place in the optic chiasm, and a final mirroring takes place by the decussation of the optic radiation. The final "image" is upside-down, and the left and right hemifields are on the contralateral hemisphere. U=up; D=down; L=left; R=right; F=fovea