Word: optic
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...light then passes through the lens, which lies directly behind the iris and changes shape as needed--curving or flattening--to help focus the image onto the retina, the light-sensitive tissue at the back of the eyeball that converts the light into electrical signals. From there, the optic nerve sends these impulses to the brain's optic centers, which create the picture in your mind...
...there's blood in the stool or the sigmoidoscopy reveals a problem, a more thorough exam is required. (A positive stool test indicates cancer less than 10% of the time.) In a procedure called a colonoscopy, a gastroenterologist uses a light-tipped fiber-optic instrument to examine the entire length of the large intestine. Since you're sedated, the hardest part is often drinking the salty liquid needed to evacuate your bowels the night before...
...election trail and 12-day Asia trip reduce voice to whisper. Vocal cords examined with fiber-optic probe; given drug to keep stomach acid out of throat...
...company's stock soaring. It was the perfect meeting of a CEO with an unlimited imagination and a corporation with an unlimited checkbook. In January 1998, just two months after Armstrong took the helm, the company paid $11 billion for Teleport, a company that operates fiber-optic networks in New York and other cities. Six months later, AT&T purchased Tele-Communications Inc., then the second largest cable company in the U.S., for $53.5 billion. Acquiring MediaOne, and adding its 5 million subscribers to TCI's 12 million households, would finally give AT&T the national footprint it needed...
...only additions to the appearance of thebuilding are the fiber-optic lights that outlinethe three stories...