Non-invasive measurement of blood glucose using retinal imaging
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United States of America Patent
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Issued Date -
Jan 13, 2005
app pub date -
Jun 8, 2004
filing date -
Jun 10, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An apparatus carries out measurements of blood glucose in a repeatable, non-invasive manner by measurement of the rate of regeneration of retinal visual pigments, such as cone visual pigments. The rate of regeneration of visual pigments is dependent upon the blood glucose concentration, and by measuring the visual pigment regeneration rate, blood glucose concentration can be accurately determined. This apparatus exposes the retina to light of selected wavelengths in selected distributions and subsequently analyzes the reflection (as color or darkness) from a selected portion of the exposed region of the retina, preferably from the fovea.
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