Word: corneas
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...favored by breeders BULLDOGS: Once symbols of British stamina, the animals often have problems with breathing, even walking SHAR-PEIS: Adults lose many of their wrinkles, but these endearing pooches are prone to congenital skin infections and eye problems caused by the eyelid rolling in on the cornea GERMAN SHEPHERDS: Hip dysplasia, which can bring on crippling arthritis, causes problems for this breed IRISH SETTERS: They should be screened for hip dysplasia and also for progressive retinal atrophy, an incurable inherited eye disease that gradually leads to blindness says Geoff Sampson, a geneticist who works for the Kennel Club...
Sometimes the trouble shows up right away. Water skiers, or snow skiers for that matter, can develop a type of temporary blindness, called photokeratitis, that occurs when reflected sunlight actually burns the cornea, the clear covering over the eye. Other conditions may be triggered after years of exposure. Studies have linked UV radiation to an increased risk of cataracts, in which the lenses of the eyes become cloudy, as well as to macular degeneration, in which the cells in the central part of the retina slowly...
...CORNEAS There aren't many treatments for a scarred cornea, the opaque outer layer of the eye, since corneal tissue can't be easily replaced. But it may be possible to grow a new one. Doctors have successfully transplanted tissue from other parts of the eye to reconstruct the cornea and restore sharper sight to a handful of patients...
...CORNEAS There aren't many treatments for a scarred cornea, the opaque outer layer of the eye, since corneal tissue can't be easily replaced. But it may be possible to grow a new one. Doctors have successfully transplanted tissue from other parts of the eye to reconstruct the cornea and restore sharper sight to a handful of patients...
...techniques used by the U.S. and Taiwanese groups were similar. Both took stem cells from the limbus, the circular area of the eye that surrounds the cornea. These cells were grown on a sterilized membrane for several weeks until they formed a layer five to 10 cells thick. Doctors then cut pieces to the size they needed and sewed them into place...