Word: retina
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About 85% to 90% of patients with AMD have the dry form, in which lesions appear on the macula, the region of the retina that is responsible for central vision. The more serious, wet form occurs when abnormal blood vessels obscure vision. A study of more than 300 people with dry AMD published in last week's American Journal of Ophthalmology showed that those who were taking statins were half as likely to develop wet AMD. Taking aspirin--with or without a statin--worked almost as well...
...last week and reportedly wants Washington to require mad-cow testing for all 35 million cattle killed in the U.S. each year--something David Hegwood, head of the American delegation, rejected. Swift, the No. 3 meat-packer in the U.S., launched a traceability program two weeks ago that uses retina tracking but said its system would not cover cattle all the way from birth to the box until the summer...
...What we’re trying to ask is, ‘How does the retina achieve this?’” Dowling explains, and his research thus far has attempted to focus on the circuitry of the retina. He investigates how the individual neurons connect and then respond to light stimuli, recording these as electrical responses...
...step towards this goal, Dowling says he has recently started researching the genetics and development of the retina, using zebrafish as subjects...
...respond appropriately and didn’t return to this end of the tank. Dowling says he wondered whether the fish just didn’t remember the cocaine correctly. He theorized that the defect might be a result of mutations in genes affecting signaling between the retina and the brain...