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 most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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People about to have surgery must tell their health care providers about all supplements they take.
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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Using outgroups to infer the ancestral state
Unhappy people
Testing motor function of cranial nerve VII - Frown
