Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent
1984-04-16
1986-12-02
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
A61B 302
Patent
active
046260900
ABSTRACT:
This invention relates to a cupola-type visual stimulation ophthalmological pparatus for examining the visual field of a patient and performing electrophysiological examinations. It comprises a projection screen consisting of the inner surface of a hemispherical cupola, the patient's eye being disposed centrally of the cupola during the examination. A device for projecting visual stimuli on the screen is provided in the upper portion of the cupola and comprises essentially a casing incorporating a light source, filter means, an object mask, a lens and a movable reflecting mirror located in the vicinity of the cupola center. This mirror is adapted to project toward any desired point of the screen a luminous stimulus perceived by the patient for measuring the extent of the patient's visual field. Moreover, with the projection device it is possible to illuminate the complete visual field according to criteria relating specifically to electrophysiological examinations. For this purpose, the casing comprises a window adapted to be masked for examining the visual field and to be opened for making electrophysiological examinations, the light rays from the light source being deflected through the window for illuminating the complete screen surface. The various optical control members necessary for performing visual tests can also be used for electrophysiological examinations since the projection device is polyvalent and thus capable of accomplishing both types of examinations.
REFERENCES:
patent: Re28921 (1976-08-01), Haines et al.
patent: 2441031 (1948-05-01), Papritz
patent: 3619037 (1971-11-01), Pugh
patent: 3951527 (1976-04-01), Blanz
patent: 4045130 (1977-08-01), Krahn
patent: 4255023 (1981-03-01), House
patent: 4260227 (1981-04-01), Munnerlyn
patent: 4310224 (1982-01-01), Weilbach et al.
Buys Bruno
Charlier Jacques
Francois Pierre
Hache Jean-Claude
Moschetto Yves
Adams Bruce L.
Bovernick Rodney B.
Burns Robert E.
Institut National de la Sante et de la Recherche Medicale (Inser
Lobato Emmanuel J.
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