Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Reexamination Certificate
2005-12-20
2005-12-20
Mantis-Mercader, Eleni (Department: 3737)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
C351S205000
Reexamination Certificate
active
06976758
ABSTRACT:
A gonioscopy lens employs a plurality of mirror sets so that substantially the entire periphery of the anterior chamber of an eye can be viewed without rotating or moving the contact lens. Each mirror set comprises a first mirror position anterior to the eye on one side of the optical axis and a second mirror positioned posterior to the first mirror on the opposite side of the optical axis. Each set is oriented relative to each other so that the second mirror receives light rays from the peripheral portion of the anterior chamber, reflects those rays to the second mirror to the first mirror, and then reflects the light rays in a generally anterior direction so that they can be used by an ophthalmologist employing the lens. The image viewed by the ophthalmologist is upright and located over its actual position.
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Iwasaki, N., M.D., et al., “The Double-Mirror Gonioscopic Lens for Surgery of the Anterior Chamber Angle,”Arch Ophthalmol 115:1333-1335, Oct. 1997.
Diagnostic Lenses, “Direct View Gonio Lens,” Ocular Instruments, Inc. Catalog, p. 5, 1997.
Special Order Lenses, “Direct View Gonio Lens,” Ocular Instruments, Inc. Catalog, p. 18, 1997.
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Diagnostic Lenses, “Ocular Sussman Four Mirror Hand Held Gonioscope,” Ocular Instruments, Inc. Catalog, 1987.
Bell Daniel M.
Harrington Peter G.
Khaw Peng Tee
Mantis-Mercader Eleni
Ocular Instruments, Inc.
Sanders John R.
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