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Physics for Physicians |
| Section: NATURAL SCIENCE / SCIENCE ESSAY |
| Author: Kurt Stehling |
| Publication: The world & I online |
| Issue Date: 6/1/1995 |
| Size: 1,844 Words, 12,672 Characters |
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Hold still, Kurt! Don't be nervous!" Dr. Lyons admonished me as he adjusted the apparatus pointing at my eyes. Ping! Ping! Two painless impacts, one on each iris, resulted in two microholes that would relieve the elevated pressure in, or behind, each eyeball.
The doctor had used a YAG (yttrium, alumina, garnet) laser-surgery procedure to create drain holes.
Laser surgery has become standard procedure for a variety of eye ailments, including glaucoma, retinal tear, and retinal vein occlusion. Various lasers, such as argon, are in the ophthalmologist's inventory, depending on wavelength and energy appropriate for an eye condition. The laser beam flashing at nano-second intervals and a few microns in diameter at its focal point performs the surgery by thermal concentration and light abs...
. . .
...ptical fibers, and astonishingly sensitive radiation detectors and the like--are being eagerly eyed by medical researchers. Many of the remarkable procedures these days--including eye surgery, brain surgery, and heart and other organ transplants--would be almost if not quite impossible without the infusion of physicists' discoveries and their willingness to work hand-in-glove with physicians.
(812 of 12,672 characters)
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