Method for non-invasive identification of individuals at risk for diabetes
First Claim
1. A method for non-invasive detection of an ocular pathology in a subject comprising:
- (a) introducing light into the eye of the subject using a laser;
(b) collecting Raman spectra emitted from the eye;
(c) dispersing the collected Raman spectra onto a detector;
(d) analyzing detected Raman spectral data to identify a molecular change associated with the ocular pathology, wherein the ocular pathology comprises a pre-cataract marker or a pre-retinopathy marker.
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Abstract
The invention provides methods for the use of Raman spectroscopy to non-invasively detect molecular characteristics of the constituents of the aqueous humor, vitreous humor, lens or retina. The method can be employed for the detection of molecular changes underlying ocular pathologies. In one embodiment of the invention, the method involves the steps of introducing light into the eye of the subject using a laser; collecting Raman spectra emitted from the eye; dispersing the collected Raman spectra onto a detector; and analyzing detected Raman spectral data to identify a molecular change related to an ocular pathology. The non-invasive method provided by the invention makes use of techniques and equipment that enable detection of Raman spectra with light intensities that fall within acceptable safety standards.
78 Citations
53 Claims
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1. A method for non-invasive detection of an ocular pathology in a subject comprising:
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(a) introducing light into the eye of the subject using a laser;
(b) collecting Raman spectra emitted from the eye;
(c) dispersing the collected Raman spectra onto a detector;
(d) analyzing detected Raman spectral data to identify a molecular change associated with the ocular pathology, wherein the ocular pathology comprises a pre-cataract marker or a pre-retinopathy marker. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for non-invasive detection of an ocular pathology in a subject comprising:
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(a) introducing light into the eye of the subject using a laser;
(b) collecting Raman spectra emitted from the eye;
(c) dispersing the collected Raman spectra onto a detector;
(d) analyzing detected Raman spectral data to identify a molecular change associated with the ocular pathology;
the molecular change comprising;
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OH stretching/—
CH stretching ratio;
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SH/—
S—
S ratio of lens proteins;
C═
C stretching vibrations of vitreous proteins;
orC—
H stretching vibrations of vitreous proteins.- View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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Specification