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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.
The longest a person has survived after a heart transplant is 24 years.
Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.
People about to have surgery must tell their health care providers about all supplements they take.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").