The Endocrine System

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TUI University
Montest Bumpers
Module 5 Case Assignment
Anatomy and Physiology
Professor Karmardi Mills
December 17, 2012
What happens with a patient who develops a cataract?
How does cataract formation represent a variance from normal anatomy & physiology?
What happens in sensorineural hearing loss?
How does sensorineural hearing loss represent a variance from normal anatomy & physiology?

For years now researchers believed that cataracts are developed because the proteins in the eye change as people age. The changes in these proteins cause the lens to become cloudy. Smoking, poor nutrition, eye injury, exposure to excessive sunlight, and certain medical conditions such as diabetes, also may be factors that put people at higher risk of developing cataracts. Cataracts develop slowly. Some of the first signs people experience is a difficulty in reading the newspaper, or they experience blurry vision. Over a period of time the eyes become more sensitive to light, and seeing at night becomes especially difficult. A common symptom is that people with cataracts often say they feel they have a film over their eyes, as if they are looking through a piece of gauze. The condition actually may benefit some people who always had trouble seeing things that are near to them, such as the words in a book. The cloudiness of a cataract changes how light is focused and temporarily results in better vision for some people. They may find themselves able to read for the first time without eyeglasses, a condition sometimes called "second sight." As the cataracts worsen, however, eventually these people will experience increasing visual difficulties. The retina lines the inner surface of the back of the eyeball; it contains millions of light-sensitive cells that change light into nerve signals that…...

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