The Anatomy And Physiology Of The Eye

1425 Words Dec 13th, 2014 6 Pages
The human eye is a wonderful organ enabling us to perform all our daily tasks. The sense of sight allows to do almost all activities. There are countless activities including studying, cooking, driving, or playing an instrument. Other tasks that vision is helpful for would be communicating, working, making life a lot easier, which are very essential. Most people would agree that vision is more valuable than the rest. The eyes allow us to interpret colors and shapes. This happens after a long complex process, starting from the reflect of light on the objects to the eyes and ends up in the brain as images. Having a healthy eye is very important and improves the quality of a person 's life. In this paper points out the very common eye disorders and their treatments. To understand the mechanism of these disorders one must first understand the anatomy and physiology of the eye.

The human eye consists of three layers of tissues, fibrous, uvea and the retina. The fibrous layer is the outermost and its avascular, meaning it lacks blood vessels. There are two regions in this layer, the sclera and the cornea. The sclera is the white portion of the eye. The cornea is the part in the middle covering the pupil and iris. The iris is one of the regions in the second layer of the eye which is also the middle layer. It is the colored part of the eye which can regulate the size of the pupil, the central opening. It controls the amount of light that enters an eye, bright light causes the…

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