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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.
Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
Green tea is able to stop the scent of garlic or onion from causing bad breath.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
![An emergency medical technician positions defibrillator paddles on the chest of a supine male patien](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_23_56_85331131.jpeg)
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