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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Much time and effort occurs between the development of a research idea and the statistical analysis Much time and effort occurs between the development of a research idea and the statistical analysis
All objects in the image are distant galaxies – not stars All objects in the image are distant galaxies – not stars
Vision with macular degeneration is experienced with an inability to focus in the center of the visu Vision with macular degeneration is experienced with an inability to focus in the center of the visu
Be sure that the clips are properly installed. Start the engine and check for proper operation. Be sure that the clips are properly installed. Start the engine and check for proper operation.
Good body mechanics for lifting heavy objects. Good body mechanics for lifting heavy objects.
In the drawing of acetaldehyde, CH3CHO, the largest partial negative charge (-) occurs on In the drawing of acetaldehyde, CH3CHO, the largest partial negative charge (-) occurs on
Video: Replication of DNA and Chromosomes/ How do cells replicate their DNA? (Animation) no Audio

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