Surgery – Diagnostic testing – Eye or testing by visual stimulus
Patent
1996-10-30
1999-03-23
Hindenburg, Max
Surgery
Diagnostic testing
Eye or testing by visual stimulus
A61B 1300
Patent
active
058852247
ABSTRACT:
The direction of an optical axis of an excitation optical system is so set that the same intersects with an optical axis of a photoreceiving optical system on a cornea and an excitation light beam is not incident upon a crystalline lens through a pupil. The photoreceiving optical system comprises a one-dimensional solid-state image pickup device as a photodetector, and a slit is arranged on a light incidence side of the one-dimensional solid-state image pickup device for distinguishing measuring light generated from the cornea from that generated from other eyeball portions and introducing the same into the one-dimensional solid-state image pickup device. Raman scattered light or fluorescence generated from the cornea can be detected by that of photoelectric conversion elements of the one-dimensional solid-state image pickup device positioned on the optical axis of the photoreceiving optical system, so that an intraocular substance is obtained on the basis of its detected value.
REFERENCES:
patent: 5058596 (1991-10-01), Makino et al.
patent: 5258788 (1993-11-01), Furuya
patent: 5553617 (1996-09-01), Barkenhagen
"A Scanning Ocular Spectrofluorophotometer", Investigative Ophthamology & Visual Science, vol.29, No. 8, Aug. 1988, pp. 1285-1293, J.W. McLaren et al.
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