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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.
Did you know?
Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.
Did you know?
Everyone has one nostril that is larger than the other.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

