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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?
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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The human body produces and destroys 15 million blood cells every second.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.