None. Audio means it's about sound, and you don't hear with your eyes.
The optic nerves
about 1 trillion in the brain
The human brain does not have nerves. Nerves are part of the peripheral nervous system, which includes nerves outside the brain and spinal cord. The brain itself is made up of neurons, glial cells, and other supporting structures.
nerves emerging from brain are called cranial nerves.they are 12 pairs
Each eye has one nerve for vision, the optic nerve, Cranial Nerve II. Nerves are actually bundles of many nerve fibers. There are nerves that supply impulses for the muscles associated with the eyeballs so they can move are the Cranial Nerve III, Oculomotor, Cranial Nerve IV, Trochlear, and Cranial Nerve VI, the Abducens nerve.
The number of cranial nerves that a cat have is 12. The cranial nerves are mostly located at the cats brain.
Your eyes are an extension of your brain. In fact most of your brain is light sensitive, and will respond by recalling memories!
The sense of smell originates from the first cranial nerves (the olfactory nerves), which sit at the base of the brain's frontal lobes, right behind the eyes and above the nose. Inhaled airborne chemicals stimulate these nerves.
The brain. It has no nerves!
Well there are many but the three that you need to now are the brain, bones,and nerves.
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There are thousands of nerves in a fingertip, with the highest concentration found in the fingertips compared to other parts of the body. The nerves in the fingertips are responsible for sending sensory information, such as touch and temperature, to the brain for processing.