Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1988-10-06
1990-04-03
Dzierzynski, P. M.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351219, A61B 310
Patent
active
049135457
ABSTRACT:
An adapter for a lens retaining ring and associated indirect ophthalmoscopy lens used by an examiner or practitioner during examination of a patient's eye fundus with a biomicroscope. The adapter includes a body portion for spacing the lens mounted in the retaining ring a predetermined distance from the eye of the patient when the adapter-retaining ring-lens combination is positioned against the eye of the patient under examination. The adapter is adapted to engage the eyelids of the eye under examination, and is so constructed so as to aid in maintaining such eyelids open, and openings are provided in the body of the adapter to aid in preventing fogging of the lens mounted in the lens retaining ring. The adapter may be selectively removable from the associated lens retaining ring (which may be a conventional or known lens retaining ring) or may be integrally formed with the retaining ring.
REFERENCES:
patent: 4721378 (1988-01-01), Volk
patent: 4728183 (1988-03-01), Heacock et al.
Sheet from inventor entitled Additional Prior Art with attached copy of Brochure page of Ocular Instruments Inc., entitled Argon Laser Lenses.
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