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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
There are approximately 3 million unintended pregnancies in the United States each year.
Asthma cases in Americans are about 75% higher today than they were in 1980.