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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?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Did you know?
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Did you know?
For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

