Word: eyeful
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Dates: during 1920-1929
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...Motion picture theatres are too dark," declared Guy A. Henry, General-Director of the Eye Sight Conservation Council of America, in an article to the Crimson. "People are unnecessarily subjected to eye strain," he asserted, "in poorly lighted auditoriums...
...human eye does not function to its best advantage in the dark or in looking at a fairly well illuminated object when the eye itself is surrounded by darkness," according to Mr. Henry. "There should prevail as high a degree of general illumination as may be consistent with securing clear and easy vision of the picture...
...illumination causes dilation of the pupil to an abnormal degree and provides a coreal area which does not permit of focal accuracy and which tends to distortion of outline. To partially overcome this, segmental action of the ciliary muscle governing the focusing of the eye is induced. Such muscular action can only be attained by great effort...
...There is constant conflict between the extreme darkness surrounding the eye and the light reflected from the screen. Under such a condition the eye is not only more susceptible to the natural varying intensity of the light from the screen, but the adaptability of the eye is lowered and the slightest flicker or movement is more noticeable and detrimental...
...orchestra or over the organ will be a source of annoying glare for even though the intensity of the reflected light from the screen may be much greater, the direct light by reason of the dark background will by contrast be blinding in effect and harmful to the eye...