AP PSYCHOLOGY

Detailed explanation-1: -The retina is a light-sensitive layer at the back of the eye that covers about 65 percent of its interior surface. Photosensitive cells called rods and cones in the retina convert incident light energy into signals that are carried to the brain by the optic nerve.

Detailed explanation-2: -Light passes through the front of the eye (cornea) to the lens. The cornea and the lens help to focus the light rays onto the back of the eye (retina). The cells in the retina absorb and convert the light to electrochemical impulses which are transferred along the optic nerve and then to the brain.

Detailed explanation-3: -Retina: The retina is the light-sensitive tissue at the back of the eye. The retina converts light into electrical impulses that are sent to the brain through the optic nerve.

Detailed explanation-4: -The optic nerve (cranial nerve II) is a bundle of over one million nerve fibers, located in the back of the eye. The optic nerve is known as the communication line between the eye and the brain, as it transmits the visual information from the retina to the brain, where it is processed and interpreted.

Detailed explanation-5: -The iris (the colored part of the eye) controls how much light the pupil lets in. Next, light passes through the lens (a clear inner part of the eye). The lens works together with the cornea to focus light correctly on the retina.