Vision Testing System and Method For Testing The Eyes
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United States of America Patent
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Dec 21, 2016
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Dec 23, 2015
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Abstract
The invention relates to a vision testing system (10) and to a method for testing the eyes of a subject, comprising a display device (11, 12, 13) by means of which optotypes can be visualized to at least one eye of the subject, comprising a control device (14) for controlling the display device, the display device comprising a backlit screen (19, 30, 35), the screen having an adjusting device for adjusting a screen luminance of the screen to an ambient luminance, the adjusting device having a measuring means for measuring the screen luminance.
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