Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1997-10-24
1999-06-01
Dang, Hung Xuan
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351221, A61B 310
Patent
active
059092718
ABSTRACT:
An ophthalmic apparatus has instrumentation for performing an ophthalmic procedure on a patient's eye when the patient and the instrumentation are aligned with each other with respect to orthogonal X, Y, and Z axes. The Z axis specifies the distance of the eye from the instrumentation. A signal generator generates an initiation signal to initiate alignment of the instrumentation and the eye. An X-Y alignment apparatus and a Z alignment apparatus each respond to the initiation signal to cause alignment along their respective axes and then determine when the instrumentation and the eye are in predetermined relative positions along the Z axis. The X-Y alignment apparatus and the Z alignment apparatus each generate a respective alignment signal. A controller receives the Z alignment signal and the X-Y alignment signal and issues a control signal to the instrumentation to perform an ophthalmic procedure in response to the alignment signals.
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Cappo Anthony P.
Gersten Martin
Matsuzaki Tomohiro
Maus Roy C.
Mosquera Gervey E.
Computed Anatomy Incorporated
Dang Hung Xuan
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