Zhou Dynasty (c. 1050-256 BCE). 1  The Zhou dynasty (c.1050-256 BCE) conquers and succeeds the Shang; later generations seek to reclaim and preserve the idealized peace of the early Zhou (or Western Zhou) period.
Learning Center > Health Library > Optic Nerve. The optic nerve is located in the back of the eye. This structure is responsible for transferring the images we see from the retina to the brain. The front surface of the optic nerve, which is visible on the retina, is called the optic disc.
As the optic nerve leaves the back of the eye, it travels to the  optic chiasm, located just below and in front of the pituitary  gland (which is why a tumor on the pituitary gland, pressing on the  optic chiasm, can cause vision problems).