Method and apparatus for the non-invasive measurement of blood glucose levels in humans

A method for determining a diagnostic glucose level, the method comprising:

• reflecting light from an internal ocular interface at an incident angle that has a selected reflection polarization characteristic;
• measuring a polarimetric parameter of the reflected light;
• and
• computing a glucose concentration based on the polarimetric parameter.

An apparatus for determining a diagnostic glucose level in a human subject, the apparatus comprising:

• a light source that produces collimated light at a selected wavelength, the collimated light arranged such that the collimated light passes through a portion of an eye of the subject and reflects off an eye lens at a selected angle as reflected light;
• a polarization analyzer that measures a polarization of the reflected light that exits the eye;
• a path length processor that determines an optical path length of the reflected light within an aqueous humor of the eye;
• and
• a glucose level processor that computes a glucose concentration based on the measured polarization and the determined optical path length.