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Non-invasive glucose monitor

  • US 6,181,957 B1
  • Filed: 07/12/1999
  • Issued: 01/30/2001
  • Est. Priority Date: 07/13/1998
  • Status: Expired due to Term
First Claim
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1. A non-invasive method for determining blood glucose levels in a subject, comprising:

  • generating an excitation laser beam at a wavelength of from 700 to 900 nanometers;

    focusing said excitation laser beam into the anterior chamber of an eye of said subject so that aqueous humor in said anterior chamber is illuminated;

    detecting a Raman spectrum from said illuminated aqueous humor;

    subtracting a fluorescence spectrum for said aqueous humor from said Raman spectrum to produce a difference spectrum; and

    then determining the blood glucose level for said subject from said difference spectrum.

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