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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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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
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The human body produces and destroys 15 million blood cells every second.
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The FDA recognizes 118 routes of administration.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.