How is behind the cornea made in the pig’s eye look like

How is behind the cornea made in the pig’s eye look like

It is made up of layers of thin cells. It's clear so we don't see it. The first structure of the eye that we perceive is the iris, which is colored brown-blue or green. The iris gives the eye its color. 

The cornea is transparent like a car windshield. When we drive at different times of the day, we have to see far. The windshield must always be clean. Likewise, the cornea must always be clean.

The cornea is created by nature. The precision of function and self-preservation cannot be matched even by the most expensive artificial lenses. The smoothness and shape of the cornea are as important to its proper functioning as transparency. If either the level of surface smoothness or the quality of the cornea changes, vision will be compromised.

Light passes through the clear cornea towards the retina at the back of the eye. Clear vision requires a healthy, clean cornea. Either as a result of a condition or an injury, the corneal tissue is damaged to the point where light can no longer pass through it, causing reduced vision.

Although the cornea appears as one clear membrane, it is made up of five distinct layers of tissue, each with its function.

It must be damaged before the infectious agent can jump between the layers (stroma) of the cornea. beneath this layer is a fibrous band called Bowman's membrane.  The third layer is made up of collagen, and connective tissue. This makes up eighty percent of the cornea. In addition to the collagen fibrils, there are cells called keratocytes. Fiber density is higher toward Bowman's membrane. Beneath the stroma is a fibrous layer. This is called Descemet's membrane. It is a scaffold for the innermost layer of cells called endothelial cells.

When endothelial cells are healthy and balanced, they function as a “pump-escape” system that delivers nutrients to the cornea. In other words, these cells allow the nourishing fluid from inside the eye (liquid food) to seep into the cornea. After the corneal cells have been nourished, the cells pump fluid out of the cornea. If the endothelial pump is impaired for some reason, the cornea also becomes overhydrated and cloudy. 

This occurs in patients who have sustained an injury to the endothelial layer during complex cataract surgery or in individuals who have an acquired disease of the corneal endothelium known as Fuchs endothelial dystrophy.