Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1989-07-31
1991-02-05
Dzierzynski, Paul M.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351208, A61B 314
Patent
active
049899686
ABSTRACT:
The present invention relates to a camera system for detecting photorefractive errors in a patient's eyes and for detection of ocular misalignment, media opacities and other abnormalities of the eyes and the lids. The invention includes a strobe mounted adjacent to a lens shield to create a slit aperture and which flash is rotated 90 degrees for vertical and horizontal or oblique photographs of different meridians. The camera has either a plurality of a mirrors forming a foldable light path or a telescopic or telephoto lens and a shorter light path to provide magnification of the image for one to one imaging.
REFERENCES:
patent: 4717952 (1988-01-01), Kohayakawa et al.
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