Cars

Brenda Deckman Practicum Assignment #2 March 9th 2004 Human Aging Diseases and Disabilities personate System: sensorial/VisualOrgan: Eyes Disease/Dis king: Cataracts explanation: A Cataract is a clouding of the crystalline electron electron lens system of the inwardness that prevents assort passage of open through the lens. The size of it and density of the cataract rout out transfigure greatly, so the loading on vision go away also vary greatly. The closer the cataract is to the center of the pupil the to a greater issue the vision will be impaired. The more to the side of the lens the clouding is, the less severe the presages will be. Often the clouding is fairl y equal throughout the lens. Symptoms: The most common announce of a cataract is blurred vision. It is most noticeable when driving a car or reading. The vision may be cloudy, stripped or fuzzy. Because the lens is not crystal clear the sparkle entering the nerve centre is scattered. This makes focusing on the retina difficult.

Sometimes a person with a cataract sees double. This is experienced when trying to focus on a distant object such as a traffic sign. Glare is also a symbol of a cataract. A person may see halos around lights at night which can make driving difficult, and b office sun can also be very irrit ating. Depth perception, the energy to ju! dge distance may also be affected. right depth perception requires the use of both eyes, and since a cataract ordinarily develops in one eye at a time, a person may favor the better eye. When one eye is favored the eyes are not working in concert which in turn affects depth perception. Changes in the way emblazon are seen can also be a symptom of a cataract. It may seem as if the world has been varicolored gray. Certain shades of blue are distorted and manipulate seem faded. When the cataract is removed colors once again appear...If you hold to get a full essay, order it on our website: BestEssayCheap.com

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