APPARATUS TO MEASURE ACCOMMODATION OF THE EYE
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United States of America Patent
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Issued Date -
Nov 14, 2013
app pub date -
Sep 14, 2011
filing date -
Sep 14, 2010
priority date (Note) -
Abandoned
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Abstract
A device for measuring a user's range of clear focus (accommodation) comprising: a display for displaying a test image to the user at a first size; a sensor for determining the separation between the display and the user; and a processor for determining the angular subtence of the image to the user and to resize the test image in order to substantially maintain the angular subtence of the image when the separation between the display and the user is varied.
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