Noninvasive eye-property monitoring, including aqueous-humor glucose monitoring as an indication of blood glucose level
First Claim
1. An eye-property monitoring method comprisingin a seriatim manner, illuminating the eye from two or more, different-wavelength light sources whose respective wavelengths interact with internal eye properties in optically differentiated manners,adjusting the operating levels of the sources to a predetermined relative setting,by said illuminating, producing seriatim-light-source eye reflections including multiple internal reflections within the outer structure of the eye, and at least one resulting outbound reflection,monitoring the outbound-reflection to detect therein the relative reflection levels associated with the sources, andassociating said detected, relative reflection levels with at least one eye property.
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Abstract
An eye-property monitoring system and method for performing the steps of (1) illuminating the eye from at least one light source whose wavelength interacts with internal eye properties in an optically active manner, (2) controlling, to make known and stable, the operating-power/light-output level of the source, (3) by such illuminating, producing light-source eye reflections including (a) multiple internal reflections within the outer structure of the eye, and (b) linked with those internal reflections at least one resulting outbound reflection, (4) monitoring the outbound-reflection to detect therein the reflection level associated with the at least one source, and (5) associating such detected reflection level as an indication of certain eye properties, such as aqueous glucose concentration.
87 Citations
24 Claims
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1. An eye-property monitoring method comprising
in a seriatim manner, illuminating the eye from two or more, different-wavelength light sources whose respective wavelengths interact with internal eye properties in optically differentiated manners, adjusting the operating levels of the sources to a predetermined relative setting, by said illuminating, producing seriatim-light-source eye reflections including multiple internal reflections within the outer structure of the eye, and at least one resulting outbound reflection, monitoring the outbound-reflection to detect therein the relative reflection levels associated with the sources, and associating said detected, relative reflection levels with at least one eye property.
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6. A blood glucose monitoring method comprising
in an alternating manner, illuminating the eye from two, different-wavelength light sources, one of which has a wavelength to which glucose is more optically active than it is to the wavelength of the other source, adjusting the operating levels of the two sources to a predetermined relative setting, by said illuminating, producing eye reflections including multiple internal reflections within the outer structure of the eye, and at least one resulting outbound reflection, and monitoring a at least one condition of the outbound reflection and determining blood glucose level therefrom.
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15. An eye-property monitoring method comprising
illuminating the eye from at least one light source whose wavelength interacts with internal eye properties in an optically active manner, controlling, to make substantially known and stable, at a predetermined setting, the operating-power/light-output level of the source, by said illuminating, producing light-source eye reflections including (a) multiple internal reflections within the outer structure of the eye, and (b) at least one resulting outbound reflection, monitoring the outbound-reflection to detect therein the reflection level associated with the at least one source, and associating said detected reflection level with at least one certain eye property.
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16. An eye-property monitoring system comprising
a light-source structure including a pair of light sources having different, respective wavelengths selected to interact with internal eye properties in optically differentiated manners, operable in a seriatim manner (a) to illuminate a person'"'"'s eye, and (b) to produce, by such illumination, eye reflections including (1) multiple internal reflections within the outer structure of the eye, and (2) at least one resulting outbound reflection, an optical monitoring structure operatively associated with said light-source structure, disposed for monitoring said a resulting outbound-reflection to detect therein the relative reflection levels associated with said sources, and a result-determining structure operatively connected to said optical monitoring structure for associating said detected, relative, outbound reflection levels with an indication of at least one eye property.
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19. An blood glucose monitoring system comprising
a pair of light sources having different, respective wavelengths one of which is more optically active with respect to glucose than is the other, said sources being operable in a seriatim manner (a) to illuminate a person'"'"'s eye, and (b) to produce, by such illumination, eye reflections including (1) multiple internal reflections within the outer structure of the eye, and (2) at least one resulting outbound reflection, an optical monitoring structure operatively associated with said light-source structure, disposed for monitoring said resulting outbound-reflection to detect therein the relative reflection levels associated with said sources, and a result-determining structure operatively connected to said optical monitoring structure for associating said detected, relative, outbound reflection levels with an indication of blood glucose level.
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22. An eye-property monitoring system comprising
at least one light source whose wavelength interacts with internal eye properties in an optically active manner, operable (a) to illuminate a person'"'"'s eye, and (b) to produce, by such illumination, eye reflections including (1) multiple internal reflections within the outer structure of the eye, and (2) at least one resulting outbound reflection, an optical monitoring structure operatively associated with said at least one light source, disposed for monitoring said resulting outbound-reflection to detect therein the reflection level associated with the at least one source, and a result-determining structure, operatively connected to said optical monitoring structure for associating said detected, resulting reflection level with an indication of at least one eye property.
Specification