Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Methods of use
Patent
1996-11-06
1999-04-13
Mai, Huy
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Methods of use
351205, 351221, A61B 300
Patent
active
058943404
ABSTRACT:
Method for quantifying optical properties of the human lens. The present invention includes the application of fiberoptic, OMA-based instrumentation as an in vivo diagnostic tool for the human ocular lens. Rapid, noninvasive and comprehensive assessment of the optical characteristics of a lens using very modest levels of exciting light are described. Typically, the backscatter and fluorescence spectra (from about 300- to 900-nm) elicited by each of several exciting wavelengths (from about 300- to 600-nm) are collected within a few seconds. The resulting optical signature of individual lenses is then used to assess the overall optical quality of the lens by comparing the results with a database of similar measurements obtained from a reference set of normal human lenses having various ages. Several metrics have been identified which gauge the optical quality of a given lens relative to the norm for the subject's chronological age. These metrics may also serve to document accelerated optical aging and/or as early indicators of cataract or other disease processes.
REFERENCES:
patent: 5303026 (1994-04-01), Strobl et al.
patent: 5369496 (1994-11-01), Alfano et al.
Joseph A. Zuclich et al., "Rapid Noninvasive Optical Characterization of the Human Lens," Lasers in the Life Sciences 6(1), 39 (1994).
Bigio Irving J.
Loree, deceased Thomas R.
Shimada Tsutomu
Strobl Karlheinz
Zuclich Joseph A.
Freund Samuel M.
Mai Huy
The Regents of the University of California
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