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optic chiasma

A Dictionary of Biology | 2004 | 465 words | Copyright

optic chiasma The point where some of the fibres from both optic nerves cross over to the opposite side, forming an X-shaped structure. Sensory information from the right side of both the right and left eye is transmitted to the right visual cortex in the brain (via the right lateral geniculate nucleus), while information from the left side of each eye is carried to the left visual cortex. Thus each half of the brain receives sensory information from both eyes.

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