What is an optical nerve?

Optical nerve is a tissue bundle that transmits signals generated from the eye to the brain. The optical nerve is essentially a connection between the eye and the brain. It consists of a group of more than a million nerve fibers, although the tissue of the optical nerve is actually more closely related to brain tissue than the nerve tissue.

When the light enters the eye, it first passes through the cornea. The cornea works just like a lens cover on the camera. The cornea bends the input light to direct it to the pupil and the iris. Iris is a colorful part of the eye and the pupil is a black circle in the middle of the eye.

The pupil regulates the amount of light that enters the eye. It increases or enlarged when there is less ambient light, allowing more light to enter the eye. On the contrary, the pupil reduces the size when there is a lot of ambient light, which limits the amount of light that can enter.

The input light then passes through the lens of the eye. The lens helps to focus the inlet light on the back of the eye. This area of ​​the eye is known as a retina, a layer sensitive to the light nErvo cells that convert light are accepted to electrical pulses that are sent to the brain using an optical nerve. Interestingly, the light and the corresponding image are actually focused upside down on the retina.

electrical pulses that are transmitted to the brain using an optical nerve are then perceived as an image. Although the image is initially focused upside down on the retina and transmitted in the same way, the brain perceives the image as the right side up.

Because the optical nerve is the pipe between the eyes and the brain, any problems associated with it can cause vision problems. Hypoplasia of optical nerve is the condition that occurs when the opticalner is not fully developed during pregnancy. This may cause a slight impairment of sight in one or both eyes.

It is not known exactly what causes hypoplasia of optical nerve and is not considered a hereditary condition. Although there are some studies that indicate that there may be a connection between mothers with diabetesEm, abuse of mothers and alcohol, the age of mothers for less than 20 years and the use of antiepileptic drugs during pregnancy; Research shows that these factors are not factors in most cases of optical nerve hypoplasia.

In addition to hypoplasia of optical nerve, conditions such as disease, injuries, diabetes, hypertension, drug, alcohol or tobacco abuse can affect the ability of optical nerve to function properly, possibly cause visual damage or even blindness.