A patient asks the nurse, "What causes cataracts in older people?" Which of these statements should form the basis for the nurse's response?
a. "Cataracts usually result from chronic systemic diseases."
b. "Cataracts may form as a result of exposure to ultraviolet light over time."
c. "Cataracts are believed to result from eye injuries sustained early in life."
d. "Cataracts usually result from the prolonged use of toxic substances."
ANS: B
Factors that contribute to cataract development may include age and longer exposure to ultraviolet radiation (sunlight). Other causes are diabetes, smoking, steroids, nutritional deficiencies, alcohol consumption, intraocular infections, trauma, and congenital defects.
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