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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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Illicit drug use costs the United States approximately $181 billion every year.

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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

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Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

McBurney’s point is the common location of pain in children and adolescents with appendicitis. McBurney’s point is the common location of pain in children and adolescents with appendicitis.
A Double-Line Spectroscopic Binary A Double-Line Spectroscopic Binary
The energy set-point view that is the basis of many people’s thinking about hunger and eating. The energy set-point view that is the basis of many people’s thinking about hunger and eating.
Concentration affects where the precipitin line forms. When 1 reactant is held at a constant ... Concentration affects where the precipitin line forms. When 1 reactant is held at a constant ...
The slope of the curve y = ax^3 - bx^2 + cx - 3 at x = 2 is 5. If the point of inflection of the cur The slope of the curve y = ax^3 - bx^2 + cx - 3 at x = 2 is 5. If the point of inflection of the cur
Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at ... Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at ...
Video: Types of disease resistance: innate defenses & immunity

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