CATARACT Meaning and
Definition
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A cataract is a common term used in medicine to describe a specific eye condition characterized by the clouding or opacity of the lens within the eye. The lens in a healthy eye is typically clear and allows light to pass through, focusing on the retina at the back of the eye. However, a cataract forms when proteins in the lens begin to clump together, causing it to become cloudy and impairing the passage of light.
This clouding of the lens may result in various symptoms, such as blurred or hazy vision, increased sensitivity to glare, difficulty seeing at night, or a noticeable decrease in visual clarity. Cataracts can develop slowly over time or may occur more rapidly due to certain factors like aging, genetics, diabetes, smoking, exposure to ultraviolet radiation, or certain medications.
Treatment for cataracts generally involves removing the affected lens and replacing it with a clear artificial lens through a surgical procedure known as cataract surgery. This surgery is highly successful and can significantly restore vision and improve quality of life for individuals affected by cataracts.
In summary, a cataract refers to the clouding or opacity of the eye's lens, leading to decreased visual clarity and potential impairment. It is a common eye condition that can be effectively treated through surgical intervention.
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A loss of transparency of the crystalline lens of the eye, or of its capsule.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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The rushing of a great body of water over steep rocks; a disease in the eye by which the vision becomes impaired or destroyed.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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Etymology of CATARACT
The word "cataract" originates from the Early Latin term "cataracta", which was borrowed from the Ancient Greek word "kataráktēs". In Greek, "kataráktēs" referred to a waterfall or rush of water. Over time, the meaning of the term expanded to also denote a medical condition characterized by the opacity of the lens in the eye, presumably due to the appearance of the eye resembling the frothy rush of water seen in a waterfall. Thus, "cataract" acquired its medical meaning that is commonly used today.
Similar spelling words for CATARACT
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