Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1984-11-15
1989-11-28
Arnold, Bruce Y.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351214, A61B 310
Patent
active
048833517
ABSTRACT:
Apparatus for detecting the presence of diabetes mellitus and other abnormalities affecting the lens of the eye and for monitoring eye lens changes resulting from that disease or from other causes is disclosed. The apparatus enables the diffusion coefficient of the lens of a patient's eye to be ascertained by directing a light beam from a low-power laser at the patient's lens and measuring fluctuations in intensity of the back-scattered light caused by the movement of light scatterers in the lens. The apparatus is arranged to give a three dimensional view of the light-scattering site in the lens of the eye from which a measurement is taken and employs a binocular microscope having a fiber optic situated in one eyepiece of the microscope. Back-scattered light is focused by that eyepiece on the fiber optic while enabling the site in the lens to be stereoptically viewed.
REFERENCES:
patent: 4477159 (1984-10-01), Mizuno et al.
Tanaka et al., Investigative Ophtalmology and Visual Science, vol. 16, pp. 135-140, Feb. 19, 1977.
Arnold Bruce Y.
Dzierzynski P. M.
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