This is the first 1,000 characters of 2155 words (8.62 pages) in the essay titled Cataracts
What is a cataract? A cataract is a cloudy or opaque area in the normally
transparent lens of the eye. Its effect on vision depends on the extent of the cloudiness.
Small spots in the lens may cause little or no vision loss. As the opacity thickens, it
prevents light rays from passing through the lens and focusing on the retina, the light
sensitive tissue lining the back of the eye. Early lens changes or opacities may not disturb
vision. But as the lens continues to change, several specific symptoms including blurred
vision; sensitivity to light and glare; increased nearsightedness; or distorted images in
either eye, may develop. Cataracts are usually associated with aging. As a person grows
older, the lens becomes less flexible and loses some of its ability to focus light onto the
retina. As the lens becomes harder, it tends to develop cataracts. Cataracts can eventually
become milky white and fill the lens. The patient is then considered...
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