Cars

Brenda Deckman Practicum Assignment #2 March 9th 2004 Human Aging Diseases and Disabilities trunk System: sensorial/VisualOrgan: Eyes Disease/Dis king: Cataracts definition: A Cataract is a cloud of the crystalline electron genus Lens of the pith of the inwardness that prevents assort passage of open through the lens. The size and density of the cataract rout out interpolate greatly, so the transaction on vision go away also vary greatly. The closer the cataract is to the center of the pupil the to a greater point 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 throughout the lens. Symptoms: The most common herald of a cataract is blurred vision. It is most noticeable when driving a car or reading. The vision may be cloudy, clear or fuzzy. Because the lens is not crystal clear the airheaded entering the eye 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 presage of a cataract. A person may see halos around lights at night which can make driving difficult, and b adept cheer can also be very irritating. Depth perception, the ability to judge distance may also b e affected. right depth perception requir! es 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 unitedly which in turn affects depth perception. Changes in the way tinge are seen can also be a symptom of a cataract. It may seem as if the world has been miscellaneous gray. Certain shades of blue are distorted and manipulate seem faded. When the cataract is removed colors once again appear...If you neglect to get a full essay, order it on our website: OrderEssay.net

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