MeSH definition : The X-shaped structure formed by the meeting of the two optic nerves. At the optic
chiasm the fibers from the medial part of each retina cross to project to the other
side of the brain while the lateral retinal fibers continue on the same side. As a
result each half of the brain receives information about the contralateral visual
field from both eyes.;
The X-shaped structure formed by the meeting of the two optic nerves. At the optic
chiasm the fibers from the medial part of each retina cross to project to the other
side of the brain while the lateral retinal fibers continue on the same side. As a
result each half of the brain receives information about the contralateral visual
field from both eyes.