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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.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.