What is the opticus nerve?

Opticus nerve or optical nerve is the second skull nerve and carries visual stimuli from eyes to the brain. It is not technically a nerve, but part of the central nervous system. The central nervous system is made up of a spinal cord and brain and is responsible for ensuring the proper running of the body. Nerves are part of the peripheral nervous system, which consists of an automatic nervous system, spinal nerves and skull nerves. There are 12 pairs of cranial nerves that appear directly from the brain, rather than spinal cord, like 31 pairs of spinal nerves. The retina is a tissue sensitive layer that lines the inside of the eyeball. The nerve is connected to an optical disk, an oval area at the back of the eye, near the nasal cavity. This area is also referred to as a blind spot because it does not contain photography theoreceptors.

All ganglium fibers, which are nerve cell collections, converge on an optical disk. The Opticus nerve runs fromThe optical disk via the optical channel and goes into the skull to create an X -shaped structure called optical chiasm . The nerve fibers then join and continue under the brain to connect to the occipital lobe on each side. The occital lobe of the brain contains most of the visual cortex and is the center of visual processing. It is located in the back of the head, in the rear of the skull.

When vision problems occur, doctors can study patterns of lost vision to understand where damage can occur. This is because damage at different points of the nerve causes different patterns of lost sight. For example, an optical chiasm tumor can cause vision problems such as loss of vision, blind spot and loss of vision within a few days.

infections such as optical neuritis may affect nervous opticus. Optical neuritis is an inflammation of the nervous opticus and may be caused by a viral or bacterial infection; complications from other inflammatory diseases, jaKO is meningitis; reaction to something toxic; or by physical trauma. Another common problem that can affect the optical nerve is glaucoma. Glaucoma is a loss of vision due to high pressure in the eye - this pressure often presses nervous opticus and has vision problems.