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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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The average office desk has 400 times more bacteria on it than a toilet.