Word: retina
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...blank cartridge with a hammer. Some thing from the explosion had slashed through the cornea (outer covering) of Jimmy's eye, through the dark-brown iris, through the lens and the gelatinous filler behind it, until it had come to rest just short of the retina, the screen at the back of the eyeball (see diagram). Repairing the cornea was routine. But find ing the object that had made the wound -and was still in the eyeball - was another matter. All standard techniques failed...
Pulses & Echoes. With Jimmy anesthetized, Dr. Passmore first rolled the left eyeball over in its socket and applied heat, to "glue" the retina in place so that it would not become detached during surgical manipulation. With an ultrasound device that worked from outside the eyeball, Dr. Bronson was able to get a rough idea where the object was, and Dr. Passmore proceeded to remove the useless, damaged lens from Jimmy's eye. Then Dr. Bronson took up the ultimate in delicate, ultrasound probes, smaller and finer than any dentist's drill. Its tip, about as thick...
...1840s, Daubigny worked for travel books and magazines, doing graphics of a candidness that showed his immediate vision of nature. The more dependent his landscapes became on fleeting optical visions, the flatter they grew, as if no matter how far away an object was, it registered equally on his retina. In the eight years between Morning on the Oise and Field in June, Daubigny traded the traditional depth of his predecessors for the surface impact of red poppies. Eventually, even such panoramas were replaced by the narrower vision that the eye can encompass without moving...
When a blood clot formed behind the retina of his left eye in 1958, Bob Hope, then 55, hardly cut back his activities at all. Doctors feared a partial loss of sight. But Hope sprang eternal, and the danger seemed to pass-until a month ago. Now Bob has checked into San Francisco's Children's Hospital. Though the actual treatment-powerful light beams precisely focused on the eye to dissolve the clot-is only minutes long, Hope will be sidelined for about two weeks. That means he can't do his Dec. 13 TV show...
...opening wider -just in time to receive the shattering bombardment of infra-red rays that continue after most of the visible radiation is gone. There is no warning pain as the radiation passes through the viewer's dilated pupil and is focused onto the center of the retina, even when the concentrated rays burn a hole in this sensitive, irreplaceable screen. Slight damage to this part of the retina causes incurable blurring of vision. Damage of medium severity destroys all but peripheral vision. More burning of the retina means blindness...