The Human Eye Of The Eye Essay examples

1381 Words Apr 26th, 2016 null Page
The Human Eye
One of the most composite and magnificent parts in the body is the human eye. Through eyes, people are able to visually see the world, and all of its wonders and spectacles. In the human body, “eyes are the second most complex organ in the body only behind the brain” (Butler, 2015). All over the world, people have various eye shapes, eye colors, and eye visions. However, unfortunately, there are some people who were either born blind or became blind due to the effects of old age or some of the more tragic diseases that can occur. In the United States, “an estimated 1.1 million people are said to be legally blind” (ReferralMD, 2016). Functions of the Eye
The best way to understand how the eye works, is to compare it to a camera. Practically, the eye works just like a camera in which it “collects, focuses, and transfers light through a lens, and produces a picture of what someone is seeing” (American Foundation for the Blind, 2016). This process occurs due to the functions of the cornea, retina, and the optic nerve. “With cameras, the picture is generated on film, whereas in the eye, the picture is generated on the retina. The retina is a thin layer of light sensitive cells located in the back of the eye. The cornea is a clear transparent layer located in the front of the eye, which helps focus in light on the retina. Of course, eyelids control how much light passes through a person’s eyes. Finally, the nerve fibers connected behind the retina…

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