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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?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Image of an Almost-Extrasolar Planet Image of an Almost-Extrasolar Planet
Ellsworth Kelly, Three Panels: Orange, Dark Gray, Green. Ellsworth Kelly, Three Panels: Orange, Dark Gray, Green.
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Apply passive touch over the eyes and cheeks to finish. Place the hands, using very light pressure, ... Apply passive touch over the eyes and cheeks to finish. Place the hands, using very light pressure, ...
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Video: Pores and Ion Channels

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