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Did you know?
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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Medication errors are more common among seriously ill patients than with those with minor conditions.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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In 1864, the first barbiturate (barbituric acid) was synthesized.

