Method and apparatus for non-invasive monitoring of blood substances using self-sampled tears
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United States of America Patent
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Nov 7, 2006
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N/A
app pub date -
Apr 1, 2003
filing date -
Apr 5, 2002
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Abstract
A method and apparatus for non-invasively determining the concentration of a substance in blood, such as glucose, include a sample portion arranged for contacting an eye region of a user to obtain a tear fluid sample, a sensor in communication with the sample portion for generating a signal related to the tear substance concentration, and a processor in communication with the sensor for determining a blood substance concentration corresponding to the tear substance concentration.
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