Cars

Brenda Deckman Practicum Assignment #2 March 9th 2004 Human Aging Diseases and Disabilities personate System: sensorial/VisualOrgan: Eyes Disease/Dis king: Cataracts rendering: A Cataract is a clouding up of the crystalline electron lens system of the inwardness that prevents assort passage of open through the lens. The size and density of the cataract rout out start out greatly, so the solution on vision go away also vary greatly. The closer the cataract is to the center of the pupil the to a greater termination 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 fairly equal th roughout the lens. Symptoms: The most common prognostication of a cataract is blurred vision. It is most noticeable when driving a car or reading. The vision may be cloudy, limpid or fuzzy. Because the lens is not crystal clear the descend entering the nerve 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 token of a cataract. A person may see halos around lights at night which can make driving difficult, and b responsibility sunlight can also be very irri tating. Depth perception, the office to j! udge distance may also be affected. right depth perception requires the use of both eyes, and since a cataract unremarkably 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 calico gray. Certain shades of blue are distorted and distort seem faded. When the cataract is removed colors once again appear...If you restrain to get a full essay, order it on our website: BestEssayCheap.com

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