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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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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

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The average office desk has 400 times more bacteria on it than a toilet.

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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

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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.

EMS personnel respond to emergencies and transport patients to the hospital. EMS personnel respond to emergencies and transport patients to the hospital.
Three types of urine tests for checking patients’ urine for diabetes. Three types of urine tests for checking patients’ urine for diabetes.
It may be difficult for patients to get the vital minerals they need from their diets, so ... It may be difficult for patients to get the vital minerals they need from their diets, so ...
Principal component analysis of blood plasma metabolites in chronic myeloid leukemia (CML) patients Principal component analysis of blood plasma metabolites in chronic myeloid leukemia (CML) patients
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
Growth of cultured cells from patients with xeroderma pigmentosum (XP) Growth of cultured cells from patients with xeroderma pigmentosum (XP)
Video: Types of disease resistance: innate defenses & immunity

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