Ophthalmic (44) Patents (Class D24/172)
  • Method for computing morphology of cornea endothelium cells
    Patent number: 5523213
    Abstract: In examining the progress of patients before and after a cataract operation, the morphology of cornea endothelium cells used in medical treatment, may be determined from a cornea endothelium cell image with less labor. Center points of two-dimensionally continuous cells of a cornea endothelium cell image are entered into a computer, and peripheral points obtained by determining peripheral points which are center points of the cells within a specified distance from one center point are sorted clockwise. If an angle formed by successive two peripheral points and the center point is less than a specified angle, the greater of the two peripheral points in distance from the center point is excluded from the peripheral points.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: June 4, 1996
    Assignee: Konan Inc.
    Inventors: Yoko Takahashi, Tatsuya Kasahara
  • Opthalmic applicator for irradiation of intra-ocular tumors or the like
    Patent number: D320074
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: September 17, 1991
    Assignee: Unisearch Limited
    Inventors: Richard B. Frost, Christopher A. Karolis
  • Ophthalmometer or similar article
    Patent number: D320077
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: September 17, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Koizumi
  • Screw driver for dental implants
    Patent number: D320452
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: October 1, 1991
    Assignee: ACE Surgical Supply Co.
    Inventor: Joseph E. Carchidi
  • Ocular unit for eye surgery
    Patent number: D325086
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: March 31, 1992
    Assignee: Alcon Surgical, Inc.
    Inventors: Steve Charles, Kenneth R. Erikson, Brian Macowski, Lonnie C. Pogue
  • Lens testing instrument
    Patent number: D325782
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: April 28, 1992
    Assignee: Essilor International (Compagnie General d'Optique)
    Inventor: Francois Elie
  • Refractometer
    Patent number: D327024
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: June 16, 1992
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventor: Francois Elie
  • Lens centering instrument
    Patent number: D327126
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: June 16, 1992
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventor: Francois Elie
  • Lens centering instrument
    Patent number: D327326
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: June 23, 1992
    Assignee: Essilor International (Compagnie General d'Optique)
    Inventor: Francois Elie
  • Confocal laser-scanning ophthalmoscope
    Patent number: D330769
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: November 3, 1992
    Assignee: Carl-Zeiss-Stiftung, Heidenheim-Brenz
    Inventors: Erich Blaha, Gerhard Gaida
  • Automatic eye-refraction measuring apparatus with spectacle lens measuring apparatus
    Patent number: D341541
    Type: Grant
    Filed: April 10, 1992
    Date of Patent: November 23, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Ichiyoshi
  • Vision tester
    Patent number: D342317
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: December 14, 1993
    Assignee: VSI International, Inc.
    Inventors: Myron Orlinsky, George Krubski, Leon Chang
  • Ophthalmic refractor
    Patent number: D344587
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: February 22, 1994
    Assignee: R. H. Burton Company
    Inventors: Roy H. Burton, David E. Wood, Robert G. Miller
  • Automated hand-held keratometer
    Patent number: D345213
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: March 15, 1994
    Inventors: Tadmor Shalon, Bryce Rutter
  • Headband for supporting one or more medical instruments
    Patent number: D345798
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: April 5, 1994
    Assignee: Carl-Zeiss-Stiftung
    Inventors: Peter Hildenbrand, Walter Matuschek, Heinz Gottlob
  • Tonometer
    Patent number: D348224
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: June 28, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Hayashi
  • Vision tester
    Patent number: D348931
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: July 19, 1994
    Assignee: PRIO Corporation
    Inventor: Jonathan G. Torrey
  • Indirect ophthalmoscopy lens retaining ring
    Patent number: D357319
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: April 11, 1995
    Inventor: Donald A. Volk
  • Spectacle frame holder
    Patent number: D357489
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: April 18, 1995
    Assignee: Key Computer Systems, Inc.
    Inventor: Charles P. Breed
  • Ophthalmic laser treatment machine
    Patent number: D360465
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: July 18, 1995
    Assignee: William H. McMahan
    Inventor: Gregg D. Niven
  • Coupler for adapting a beam splitter to an otoscope
    Patent number: D363778
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: October 31, 1995
    Inventors: Richard M. Cane, Wayne R. Byard
  • Ophthalmic refractor
    Patent number: D365149
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: December 12, 1995
    Assignee: R. H. Burton Company
    Inventors: Roy H. Burton, David E. Wood
  • Lensmeter
    Patent number: D369112
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: April 23, 1996
    Assignee: Leica Inc.
    Inventors: David A. Luce, Christopher J. Percival, Paul J. Klock
  • Retina chart
    Patent number: D370259
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: May 28, 1996
    Inventor: Steven A. Teich
  • Combined vision tester and recharging stand therefor
    Patent number: D370260
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: May 28, 1996
    Assignee: Prio Corporation
    Inventor: Jonathan G. Torrey
  • Ophthalmic refractor
    Patent number: D374720
    Type: Grant
    Filed: June 8, 1995
    Date of Patent: October 15, 1996
    Inventor: Ernest J. Lukaszewski
  • Ophthalmic laser
    Patent number: D376207
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: December 3, 1996
    Assignee: Alcon Laboratories, Inc.
    Inventors: Mark Buczek, Bruno Dacquay, James R. Dennewill, K. Allen Le, Leonard Rodriguez, Philip J. D'Almada Remedios, Douglas F. Walker