Disparity in virtual image due to visual field reception through lenses and physics of light could be solved by crossing of visual pathways to the cerebral cortex. Thus the efficient mapping of bi-image fields in the cerebral cortex was achieved through a chiasm instating symmetrical continuity of the two image fields. This results in an inversion and a reversal of the image field at the visual cortex.

• Disparity in virtual image due to visual field reception through lenses and physics of light could be solved by crossing of visual pathways to the cerebral cortex. Thus the efficient mapping of bi-image fields in the cerebral cortex was achieved through a chiasm instating symmetrical continuity of the two image fields. This results in an inversion and a reversal of the image field at the visual cortex.

• Sensory system compensation for body representation of the remaining sensory systems had to cross to the contralateral side to connect with the real body space represented by vision. Thus following, the motor systems has to also be crossed in order to match the sensory inputs. (See Circuitry)