Word: lensed
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For more than 3,000 years, doctors were balked in their efforts to restore anything like normal vision to elderly eyes clouded by cataracts. In modern times they have been able to cut into the eyeball, remove the cataract-clouded lens, and try to make up for the loss of...
...tough material resembling Cellophane. A cataract is a clouding of this normally transparent lens (see diagram); as the clouding gets denser, less & less light gets through to the retina. Sometimes the whole lens is removed, sometimes only a part, with the clouded jelly. In either case, external lenses (i.e., special glasses) with limited focusing range have been necessary...
22 out of 25. In the Lancet, Dr. Harold Ridley, London surgeon, describes the ingenious new technique for slipping a plastic lens into the eyeball. Only the front part of the lens capsule, with the jelly, is removed; the back part of the capsule is allowed to remain as a...
...Ridley has put such lenses into 25 eyeballs. The first two were failures because the scientists imitated nature too closely and made the artificial lens as thick as the ordinary lens. That, it turned out, was too strong. Now they make the lenses thinner. Another failure occurred with an enfeebled man of 75 whose wound did not heal. But Dr. Ridley reports that in 22 cases, the operation appears to be successful. One patient has worn his built-in lens for two years without mishap...
In the operating theater, the TV camera's lens turret is mounted in the overhead light, directly above the surgeon's table. This has two advantages: it keeps the lens turret out of the surgeon's way, and it keeps him out of the camera's...