Word: retina
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...sink school of thought. In the current Medical Record he reports that he used electrical stimulation of eye muscles (two volts, one milliampere to each eye, 15 minutes three times a week), 75,000 units of vitamin A daily (to stimulate formation of visual purple-a pigment in the retina), daily injections of one-half cc. of vitamin B complex (for nerve vitality), five drops of iodine by mouth daily (to stimulate body metabolism), red & green glasses, training with colored cards...
...longtime student of night vision, Professor Miles explained that the retina of the eye has two kinds of vision cells cones and rods. The cones (about 7,000,000), concentrated in the retina's center, are used mainly for day vision. The rods' (130,000,000), distributed around the edges, are used for seeing in the dark...
Because the rods are on the periphery of the retina, the best way to see an object at night is not to look directly at it but at a point near it. The catch in this off-center technique is that it handicaps a person in judging his distance from an object; pedestrians sometimes walk smack into a truck at the curb because they suppose that the dark mass they see is a building across the street. Dr. Miles offers a tip on how to judge distance at night: the nearer an object is, the fuzzier its outlines are; move...
Medically, the case is practically hopeless. Ortiz' diabetes, according to the doctors who reported to the Senate's investigating committee, is of the mellitus type, productive of small hemorrhages destructive of the eye's retina, though he is "able to perceive objects with the aid of strong sunlight and positive periscopic lenses." Dr. Castroviejo is, on the other hand, famed as the author of over 400 operations involving the grafting of a normal piece of cornea in a diseased eye. Reduced to one-syllable words, the doc is good but the case is bad. Chance of recovery...
...side of the head, caused by irritation of nerves of the blood vessels in the head. If a doctor examines the interior of his patient's eye with an ophthalmoscope during an attack, he can occasionally see a spasm of the tiny blood vessels of the retina. Bright lights and noise cause migraine victims excruciating pain; during an attack the sight is usually blocked off on the sides by flickering, jagged streaks...