Word: corneas
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Dates: during 1960-1969
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...bracket to hold the film just where it ought to be, without subjecting the patient's hand to radiation. The result, according to PHS tests, is a radiation dose delivered to the skin only one-half to one-fourth that from a recommended standard machine. Radiation to the cornea of the eye is reduced to one-eighteenth...
...girls in San Jose, Calif., like teen-age girls anywhere, share books, boys, hair curlers, lipsticks and apparently eyebrow pencils. It all seemed innocent enough until two years ago when one girl returned from a trip to Mexico unaware that she had contracted trachoma-an infection that attacks the cornea of the eye and can scar it badly enough to cause permanent blindness. That single case of a disease relatively uncommon in the U.S. spread rapidly into an epidemic of 80. The virus, reported California's Dr. Phillips Thygeson last week, was transmitted by eyebrow pencils that had been...
...Screw-In Cornea. Ironically, the earliest attempt to use a primitive plastic involved one of the most intricate organs in the body. It was an 1853 attempt to replace the cornea of the eye, and it failed. Then the technique of human corneal transplants was developed, and the urgency of finding a plastic seemed to diminish. But human transplants do not stay clear in all cases. An imaginative ophthalmic surgeon, Dr. William Stone Jr., working first in Boston, then in Los Angeles, has devised a corrective corneal implant of plastic...
...outer part of the transplanted human cornea can be left in place, cloudy as it is. Dr. Stone removes most of the thickness in the center, and sets in place a narrow, artificial cornea made of polymethyl methacrylate surrounded by a Teflon skirt (see diagram). The very center of the device is threaded so that it can be moved in or out to adjust its optical characteristics. And if the patient should need further major surgery, the plug can be unscrewed all the way, giving the surgeon direct access to the inside of the eyeball. As for the inside, where...
...Payrau has also had some success with calf corneas, though they usually do not retain so much transparency as those of dogs. But his most exotic source of supply is a species of small shark, the lesser spotted dogfish (Scyliorhinus caniculus). Its cornea has the advantage of not swelling in water, which made it attractive to Dr. Payrau for patients whose eyes leak fluid, though it is thin and fragile and retains only moderate transparency...