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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?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Did you know?
Green tea is able to stop the scent of garlic or onion from causing bad breath.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.