The back of the eye is also known as the posterior segment of the eye. It is responsible for transferring visual information from the eye to the brain. The back of the eye is made up of several structures, including:

• Retina: The retina is the light-sensitive tissue at the back of the eye. It converts light into electrical impulses that are sent to the brain through the optic nerve.

• Vitreous chamber: The vitreous chamber is located in the back of the eye and is the largest of the eyes chambers, accounting for around 80 percent of the eye. The vitreous humor, commonly called the vitreous, is a clear jelly-like fluid that fills the space between the lens and the retina.

• Choroid: The choroid is a thin vascular tissue located between the sclera and the retina. It is responsible for supplying blood to the outer portion of the retina.

• Optic nerve: The optic nerve is the largest sensory nerve of the eye. It carries impulses for sight from the retina to the brain.

In summary, the back of the eye is called the posterior segment of the eye and is made up of several structures, including the retina, vitreous chamber, choroid, and optic nerve.