Ophthalmoscopy lens system

Details Ophthalmoscopy lens system Ophthalmoscopy lens system

2006-12-05

2006-12-05

Marmor, II, Charles A. (Department: 3735)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S205000, C351S206000, C606S004000

Reexamination Certificate

active

07144111

ABSTRACT:
A gonioscopic lens system which provides a real image of the anterior chamber angle of a patient's eye. The lens system includes a first lens group having a concave posterior surface configured to be placed on a patient's eye, a second lens group optically aligned with the first lens group; and a stop positioned between the first and second lens groups. An achromatic gonioscopic lens system which provides a real image of the anterior chamber angle of a patient's eye is also provided, as well as an ophthalmoscopy lens system for viewing both the anterior chamber angle and the retina of a patient's eye.

REFERENCES:
patent: 5200773 (1993-04-01), Volk
patent: 5523810 (1996-06-01), Volk
patent: 5526074 (1996-06-01), Volk
patent: 6019472 (2000-02-01), Koester et al.
patent: 6164779 (2000-12-01), Volk

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