Word: vision
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
Individuals vary widely, Dr. Peckham found, but on an average, sensitivity to light at night is reduced by more than one-third after a day at the beach without sunglasses; in some cases it is reduced by nine-tenths. The loss in sensitivity cuts down night vision in a "logarithmic proportion": the average driver loses 13% of his visual acuity, the extreme case loses...
...past, doctors have disagreed as to how long vision is impaired by the sun's glare. Dr. Peckham found from his studies with lifeguards that much of the effect wears off overnight, but in most people some effect persists for two or three days, and in some cases it continues for more than a week...
...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...
...have had far more success, a fact recognized by both the Army and the State Department. Unavoidably, government connection puts all work of the ISD at a disadvantage from the start. But further, private organizations have generally operated more understandingly and have attracted individuals of higher prestige and greater vision. Few of the personnel in the ISD have been able to convince the Germans or the Austrians that our victory resulted as much from the vitality of a way of life as from material superiority...
...primarily a rugged individualist, must crush his ego for group decisions "in order to be one of the boys." Said Dr. Slight: "Thus the aggressive vitality drive that makes the executive ambitious is thwarted, and it must go somewhere, so it goes inside, producing diarrhea, headaches, blurring of vision ringing in the ears," and ultimately ulcers,* high blood pressure, or both...