Health News Archive - December 11, 2005
Since U.S. doctors began offering laser vision correction in 1995, safety has improved and new methods give people with more severe vision problems a chance to have the procedure. But there's still no guarantee of 20/20 eyesight, and the long-term safety is unknown.
No single sleeping pill stands out as the best, according to a U.S. review of the newer sleep aids on the market.
- The prevailing range of a vocal or instrumental part, within which most of the tones lie.