Word: retina
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
...Bright light bleaches the visual purple, a pigment in the retina which is needed for vision in dim light. Overexposure slows the retina's power to restore the purple when needed...
...Lens & Retina. Their most notable conclusion in this period: the fibrous tissue was not a foreign growth between the lens and the retina (the sensitive screen upon which the lens focuses images), but a swollen, greyish transformation of the retina itself. It occurred when the babies were between two and four months...
...seven months old. Andrew Hoffmann and his pretty blonde wife thought both boys were blind, but at Presbyterian Hospital it was found that Dennis had some vision. On Kenneth, who had none, an ophthalmologist operated to remove part of the fibrous tissue. He believed that it was not the retina, but that the retina was shriveled and displaced. By last week, Dennis Hoffmann's vision was-improving slowly, but Kenneth was still sightless...
Giotto, says Ortega, was "a painter of solid and independent bodies." Three centuries later, Velasquez emphasized "hollow space"-the area between the eye and the thing seen. In recording only a dazzle of colored lights, the impressionists brought painting smack up to the retina. Picasso carried the same process a step further, painting what was back of the eyeball, inside his head. "[In the Picasso school] the eyes, instead of absorbing things, are converted into projectors of private flora and fauna. Before, the real world drained off into them; now, they are reservoirs of irreality...
...welding" operation, now widely used, has been successful in many cases. The surgeon, after turning the eyeball around, first punctures it in several places to drain the fluid between retina and choroid. Then he seals the two membranes together by heating them. The inflamed, swollen retina and choroid close up like inflated inner and outer tubes and eventually heal tightly together...