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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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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

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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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Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

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GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

The Chinese counteroffensive of November 1950 caught the Americans by surprise and cut off many ... The Chinese counteroffensive of November 1950 caught the Americans by surprise and cut off many ...
The rapid collapse of the South Vietnamese army in 1975 caught many by surprise. Evacuees formed a ... The rapid collapse of the South Vietnamese army in 1975 caught many by surprise. Evacuees formed a ...
All oily shop cloths should be stored in a metal container equipped with a lid to help prevent ... All oily shop cloths should be stored in a metal container equipped with a lid to help prevent ...
Because vitamin A is stored in the liver, chicken liver is a potent source of this vitamin Because vitamin A is stored in the liver, chicken liver is a potent source of this vitamin
Water is vital for many body functions, but it isn’t stored in the body Water is vital for many body functions, but it isn’t stored in the body
Video: Digestive System Animation

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