Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent
1994-06-15
1997-04-01
Mai, Huy
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
351233, 351237, 351244, A61B 302
Patent
active
056171579
ABSTRACT:
A computer controlled subjective refractor includes a microcomputer based remote hand control connected to an enclosure which houses the optical elements of the refractor and which controls their operation for the examination of a patient. The enclosure has a beam splitter extending at its bottom and a forehead rest extending near its bottom such that a patient's eyes are positioned near the bottom of the enclosure to view into the beam splitter and thereby materially reduce accommodation which would otherwise interfere with the accurate refracting of the patient's eyes. Movement and position location of the optical elements are achieved through a microcomputer based electronic controller which is in communication with the microcomputer remote hand control. Additionally, a microcomputer based target projector assembly may be used to selectively project any of a wide number of images comprised of eye charts and the like for testing the patient's vision. The subjective refractor thereby provides a network of microcomputer based electronic controls for very accurately positioning a plurality of optical elements and determining their position in order to determine the refractive correction of a patient's eyes. The handheld remote control includes an optical display and a number of finger controls through which an operator may actively interact with the subjective refractor as the patient is examined.
REFERENCES:
patent: 3487069 (1969-12-01), Maselli
patent: 3536383 (1970-10-01), Cornsweet et al.
patent: 3572909 (1971-03-01), VanPatten et al.
patent: 3634003 (1972-01-01), Guyton
patent: 3664631 (1972-05-01), Guyton
patent: 3669530 (1972-06-01), Guyton
patent: 3791719 (1974-02-01), Kratzer et al.
patent: 3819256 (1974-06-01), Bellows et al.
patent: 3879113 (1975-04-01), Howland et al.
patent: 3883223 (1975-05-01), Hudson
patent: 3883233 (1975-05-01), Guilino
patent: 4021102 (1977-05-01), Iizuka
patent: 4162828 (1979-07-01), Trachtman
patent: 4180323 (1979-12-01), Persson et al.
patent: 4239351 (1980-12-01), Williams et al.
patent: 4253743 (1981-03-01), Matsumura
patent: 4266862 (1981-05-01), Trotscher et al.
patent: 4293198 (1981-10-01), Kohayakawa et al.
patent: 4293199 (1981-10-01), Wada et al.
patent: 4304468 (1981-12-01), Wada
patent: 4353625 (1982-10-01), Nohda et al.
patent: 4367019 (1983-01-01), Kitao et al.
patent: 4372655 (1983-02-01), Matsumura et al.
patent: 4373787 (1983-02-01), Crane et al.
patent: 4390255 (1983-06-01), Nohda et al.
patent: 4395097 (1983-07-01), Mohrman
patent: 4396258 (1983-08-01), Hazard
patent: 4407571 (1983-10-01), Augusto
patent: 4410243 (1983-10-01), Furste
patent: 4421391 (1983-12-01), Matsumura et al.
patent: 4444476 (1984-04-01), Simon et al.
patent: 4453808 (1984-06-01), Takahashi et al.
patent: 4529280 (1985-07-01), Nohda
patent: 4531526 (1985-07-01), Genest
patent: 4533221 (1985-08-01), Trachtman
patent: 4637700 (1987-01-01), Krueger
patent: 4640596 (1987-02-01), Humphrey
patent: 4660945 (1987-04-01), Trachtman
patent: 4697895 (1987-10-01), Sekiguchi et al.
patent: 4707090 (1987-11-01), Humphrey
patent: 4730917 (1988-03-01), Kreuger
patent: 4740071 (1988-04-01), Kobayashi
patent: 4753527 (1988-06-01), Ishihara
patent: 4761070 (1988-08-01), Fukuma
patent: 4772114 (1988-09-01), Fukui et al.
patent: 4796989 (1989-01-01), Fukuma et al.
patent: 4810083 (1989-03-01), Okada et al.
patent: 4820037 (1989-04-01), Kohayakawa et al.
patent: 4828381 (1989-05-01), Shindo
patent: 4834528 (1989-05-01), Howland et al.
patent: 4848895 (1989-07-01), Kato et al.
patent: 4848896 (1989-07-01), Matsumoto
patent: 4859051 (1989-08-01), Fukuma et al.
patent: 4878750 (1989-11-01), Sekiguchi
patent: 4917480 (1990-04-01), Kato et al.
patent: 4952049 (1990-08-01), Matsumoto
patent: 5010893 (1991-04-01), Sholder
patent: 5011276 (1991-04-01), Iwamoto
patent: 5026151 (1991-06-01), Waltuck et al.
patent: 5042940 (1991-08-01), Iwamoto
patent: 5121981 (1992-06-01), Waltuck et al.
patent: 5157427 (1992-10-01), Humphrey
patent: 5208619 (1993-05-01), Campbell
patent: 5210555 (1993-05-01), Ishikura et al.
patent: 5249003 (1993-09-01), Kohayakawa
Brochure entitled "Auto Kerato-Refractometer Kr-3000", Topcon, 104.
Brochure entitled "Auto Ref-Keratometer RK-2", Canon, 1-6.
Brochure entitled "TRS-1200 Total Refraction System" Marco Technologies, 1-4.
Brochure entitled "AR-1200 Automatic Refractor", Marco Technologies, 1.
Brochure entitled "ARK-2000 Automatic Refractor/Keratomoter", Marco Technologies, 1-2.
Duane's Clinical Opthalmology, vol. 1, Chapter 67, entitled "Automated Clinical Refraction" by David L. Guyton, Revised Edition, 1992.
1994 edition of IC Master, vol. 1, pp. 2, 3, 726, 727.
Programmer's Guide to the EGA/VGA, Sutty and Blair, 1988, p. 10.
GE Owner's Manual, VHS Video Camera/Recorder, 1987, (3 pages).
Sony Corporation, Multiscan Operating Instructions, 1986, pp. 2, 3.
Bragg Susan L.
Free Steven W.
Houseman James D.
Pund Marvin L.
Shalon Tadmor
Mai Huy
Metaphase Ophthalmic Corp.
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