The place in the brain where some of the optic nerve fibers coming from one eye cross optic nerve fibers from the other eye. Also called optic chiasm.
(ki-az;mua) An X-shaped structure on the inferior aspect of the brain, anterior to the pituitary gland, where there is a partial crossing over of fibers in the optic nerves; also called the optic chiasm.
[n] - the crossing of the optic nerves from the two eyes at the base of the brain
Site at which the optic tract coming from the left eye crosses the tract coming from the right eye just before entering the optic lobes of the brain.
optic chiasm noun the crossing of the optic nerves from the two eyes at the base of the brain
a site at the base of the forebrain where the inner half of the fibers of the left and right optic nerves cross to the opposite side of the brain.