The optic chiasm is an X-shaped structure formed by the crossing of the optic nerves in the brain. The optic nerve connects the brain to the eye. To biologists, the optic chiasm is thought to be a ...

These RGC axons then navigate toward the midline of the brain at the optic chiasm, where some axons cross the midline and some do not. The proper migration of RGC axons thus contains three ...