Patents by Inventor Charles R. Munnerlyn

Charles R. Munnerlyn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6302876
    Abstract: Systems, methods and apparatus for generating images of portions of the patient's eye, such as the anterior surface of the cornea. The methods and apparatus of the present invention are particularly useful for directly imaging the profile of the ablated region of the cornea during or immediately following a laser ablation procedure, such as photorefractive keratometry (PRK), phototherapeutic keratectomy (PTK), laser in-situ keratomileusis (LASIK) or the like. These methods and apparatus allow the surgeon to precisely image the exterior edge of the eye to characterize the profile of ablated corneas and to determine the spatial variance of tissue ablation rates during the surgical procedures. Methods and apparatus are also provided for generating one or more images depicting the profile of the ablated region of the cornea. The profile is registered with a pre-ablation profile to provide feedback regarding the true ablation properties of the eye.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: October 16, 2001
    Assignee: Visx Corporation
    Inventors: John K. Shimmick, Stephen J. Hinkson, Charles R. Munnerlyn
  • Patent number: 6296634
    Abstract: An ophthalmological laser surgery system having a laser, associated elements for delivering an optical beam from the laser to a patient eye location, a control unit for controlling the operation of the system and a system input/output device, is enabled by a patient data card. The data card originally contains both patient background and system control information, which is transferred to the control unit via the input/output device. During system operation, newly generated information, such as laser beam power, is stored in the data card to provide an independent record of the surgical procedure actually performed. After one use, the data card is invalidated to prevent further use.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: October 2, 2001
    Assignee: VISX, Incorporated
    Inventors: Alan R. McMillen, Terrance N. Clapham, Charles R. Munnerlyn
  • Patent number: 6280435
    Abstract: A method for treating presbyopia by performing ablative photodecomposition of the corneal surface. The offset image of a variable aperture, such as a variable width slit and variable diameter iris diaphragm, is scanned in a preselected pattern to perform ablative sculpting of predetermined portions of a corneal surface. The scanning is performed to ablate an optical zone sized to match the patient pupil with a peripheral transition zone outside the pupil. The shape of the ablated optical zone is different from the shape of the final optical correction on the anterior surface of the cornea. The optical zone corrects for near-vision centrally and far-vision peripherally. A movable image displacement mechanism enables radial displacement and angular rotation of the profiled beam exiting from the variable aperture.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: August 28, 2001
    Assignee: VISX, Incorporated
    Inventors: Marc Odrich, Kenneth Greenberg, Jerome A. Legerton, Charles R. Munnerlyn, John K. Shimmick
  • Publication number: 20010000530
    Abstract: An ophthalmological surgery system and method for performing ablative photodecomposition of the corneal surface by offset image scanning. The image of a variable aperture, such as a variable width slit and variable diameter iris diaphragm, is scanned in a preselected pattern to perform ablative sculpting of predetermined portions of a corneal surface. The scanning is performed with a movable image offset displacement mechanism capable of effecting radial displacement and angular rotation of the profiled beam exiting from the variable aperture. The profiled beam is rotated by rotating the aperture in conjunction with the offset displacement mechanism. The invention enables wide area treatment with a laser having a narrower beam, and can be used in the treatment of many different conditions, such as hyperopia, hyperopic astigmatism, irregular refractive aberrations, post ablation smoothing and phototherapeutic keratectomy.
    Type: Application
    Filed: December 5, 2000
    Publication date: April 26, 2001
    Inventors: John K. Shimmick, William B. Telfair, Charles R. Munnerlyn, Herrmann J. Glockler
  • Patent number: 6203539
    Abstract: An ophthalmological surgery system and method for performing ablative photodecomposition of the corneal surface by offset image scanning. The image of a variable aperture, such as a variable width slit and variable diameter iris diaphragm, is scanned in a preselected pattern to perform ablative sculpting of predetermined portions of a corneal surface. The scanning is performed with a movable image offset displacement mechanism capable of effecting radial displacement and angular rotation of the profiled beam exiting from the variable aperture. The profiled beam is rotated by rotating the aperture in conjunction with the offset displacement mechanism. The invention enables wide area treatment with a laser having a narrower beam, and can be used in the treatment of many different conditions, such as hyperopia, hyperopic astigmatism, irregular refractive aberrations, post ablation smoothing and phototherapeutic keratectomy.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: March 20, 2001
    Assignee: VISX, Incorporated
    Inventors: John K. Shimmick, William B. Telfair, Charles R. Munnerlyn, Herrmann J. Glockler
  • Patent number: 6106513
    Abstract: An ophthalmological laser surgery system having a laser, associated elements for delivering an optical beam from the laser to a patient eye location, a control unit for controlling the operation of the system and a system input/output device, is enabled by a patient data card. The data card originally contains both patient background and system control information, which is transferred to the control unit via the input/output device. During system operation, newly generated information, such as laser beam power, is stored in the data card to provide an independent record of the surgical procedure actually performed. After one use, the data card is invalidated to prevent further use.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: August 22, 2000
    Assignee: Affymetrix, Inc.
    Inventors: Alan R. McMillen, Terrance N. Clapham, Charles R. Munnerlyn
  • Patent number: 6004313
    Abstract: Enhancement of the alignment between the eye and a laser beam of a laser eye surgery system using a visual fixation system, the fixation system often having an adjustable optical train. The optical train of the fixation system allows an eye having a significant refractive error to be accurately focused at a fixation target. To accommodate the refractive error, the adjustable optical train will often project an image of the target so that the projected image is in focus in front of or behind the plane of the patient's eye.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: December 21, 1999
    Assignee: VISX, Inc.
    Inventors: John K. Shimmick, Vladimir Lemberg, Terrance N. Clapham, Charles R. Munnerlyn
  • Patent number: 5556395
    Abstract: An ophthalmological surgery system and method for performing ablative photodecomposition of the corneal surface by offset image scanning. A mask having opaque and transparent portions corresponding to a desired type of correction, such as a hyperopic correction, intercepts a laser beam to provide a profiled beam. The mask is mounted for rotation about an axis and the image of the mask is offset from an intended center of rotation corresponding to an ablation center by an imaging lens which is radially offset from the center of rotation. The mask and lens rotate in unison to scan the image over the desired portion of the corneal surface. The invention enables wide area treatment with a laser having a narrower beam and makes optional the use of rotating mirrors and prisms.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: September 17, 1996
    Assignee: VISX Incorporated
    Inventors: John K. Shimmick, William B. Telfair, Charles R. Munnerlyn, Herrmann J. Glockler
  • Patent number: 5549597
    Abstract: An alignment module for determining the astigmatic axis of a patient and for aligning the cylindrical axis of a laser ablation system for ophthalmological surgery. A rotatable image element, such as target, is illuminated through a diffuser plate and an image of the target is presented along an optical path comprising a fixed collimating lens, a plurality of turning mirrors and a slidably adjustable imaging lens. The light source, diffuser plate, lenses and mirrors are all mounted on a platform which is attachable to a camera port of a surgical microscope normally installed in the delivery system optics of the laser surgery system. The movable lens is adjusted to a position corresponding to the required sphere correction, and the target is rotated until the patient sees the clearest target image, signifying alignment of the target with the astigmatic axis of the patient's eye. The alignment angle information is used to align the cylinder axis of the laser surgery system to the proper angle.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: August 27, 1996
    Assignee: Visx Incorporated
    Inventors: John K. Shimmick, Charles R. Munnerlyn
  • Patent number: 5339121
    Abstract: A rectilinear keratoscope for determining the curvature of the anterior corneal surface of an eye. The keratoscope includes a translucent sheet having a curved pattern in the shape of a grid of intersecting individual curved lines. The pattern forms a substantially rectilinear grid image when reflected from a curved surface having a known radius of curvature. Deviations from a spherical surface can be qualitatively and quantitatively determined from examining the nature of the reflected image pattern and by measuring the spatial frequency of grid lines lying between a reference point and an image point corresponding to a point on the surface of the cornea whose refractive power is to be measured.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: August 16, 1994
    Assignee: Visx, Incorported
    Inventors: John Shimmick, Charles R. Munnerlyn
  • Patent number: 5163934
    Abstract: Photorefractive keratectomy is accomplished by an excimer laser beam that ablates away corneal tissue in a photo decomposition process. Before this occurs, the epithelium (21) of the cornea (20) is surgically removed to expose Bowman's layer (22) on the anterior surface of the stroma (23) and to begin the laser ablation at Bowman's layer. An excimer laser beam is preferred for this and is rotated during the ablation to average out energy density variations in the beam. The beam is also variably masked concentrically of its axis, during the ablation, to remove corneal tissue to varying depths as necessary for recontouring the anterior stroma. Afterward, epithelium (21) rapidly regrows and resurfaces the contoured area.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: November 17, 1992
    Assignee: VISX, Incorporated
    Inventor: Charles R. Munnerlyn
  • Patent number: 4561436
    Abstract: An optical system for a surgical ophthalmic instrument 10 using a YAG laser reduces the size of the components and facilitates their combination with a binocular microscope 11. A parallel plate beam splitter 22 splits a beam 21 from a visible light He-Ne laser 20 into equal and separated He-Ne beams 21a and 21b. A pair of expanders 27 and 37 diverge the He-Ne beams and a beam 30 from the YAG laser 15. The diverging beams are combined on a coincident optical path, which is collimated and coincided with the optical path of microscope 11 between its binocular head 42 and objective 43. There, a mirror 50 coated to reflect the YAG laser light also has a pair of spaced-apart regions 51a and 51b with a second coating to reflect both the He-Ne beams 21a and 21b so that all laser light converges on the patient's eye. The central mirror region 52 is transparent to visible light so that most of the light reflected from the patient's eye is visible to the surgeon.
    Type: Grant
    Filed: October 28, 1983
    Date of Patent: December 31, 1985
    Assignee: Cooper LaserSonics, Inc.
    Inventor: Charles R. Munnerlyn
  • Patent number: 4544243
    Abstract: Information relevant to a remote instrument is made viewable within a microscope 10 by a heads up display using a beam splitter 15 arranged in a collimated light region between binoculars 12 and objective 11 of microscope 10. An electronic digital display 16 relevant to a control setting for the remote instrument is arranged off the optical axis of microscope 10 and viewed by a convex mirror 20. A folding mirror 21 directs diverging light from convex mirror 20 toward beam splitter 15, and a collimating lens 22 collimates the diverging light enroute from folding mirror 21 to beam splitter 15. Collimated light from the lens is incident on beam splitter 15 to position an image of the digital display in a marginal region of the apparent field of one of the binoculars 12.
    Type: Grant
    Filed: May 24, 1984
    Date of Patent: October 1, 1985
    Assignee: Cooper Lasersonics, Inc.
    Inventor: Charles R. Munnerlyn
  • Patent number: 4396285
    Abstract: A laser system for medical applications has at least two lasers and a movable concave reflector. The lasers are capable of generating beams of coherent electromagnetic radiation. One of the beams, an aiming beam, is aligned to impinge the reflector, to reflect therefrom and to impinge a biological specimen. The reflector is moved until the beam is aligned to impinge the desired position. The reflector is held stationary and the second beam is generated. The second beam is also aligned to impinge the reflector to reflect therefrom and to impinge the same desired position as that impinged by the first beam.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: August 2, 1983
    Assignee: Coherent, Inc.
    Inventors: Peter S. Presta, Charles R. Munnerlyn, John A. Gibson
  • Patent number: 4260227
    Abstract: A Goldmann-type perimeter is provided which automatically performs kinetic perimetry without the need for manual intervention.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: April 7, 1981
    Assignee: Coherent, Inc.
    Inventors: Charles R. Munnerlyn, Lawrence R. Joba, Ramakrishna Shanker
  • Patent number: 4192317
    Abstract: An indentation tonometer is contained within a hand holdable housing below which extends a foot plate and a movable plunger. An optical encoder is disposed within the housing and has a ruled scale that is fixed relative to the foot plate and an adjacent ruled scale that is movable relative to the fixed scale. The movable scale engages an upper surface of the plunger and is elevated to a position corresponding to the position of the plunger relative to the foot plate as intraocular pressure is measured. Components for the optical encoder are arranged within the housing to produce a digital readout. The foot plate and plunger are preferably arranged in a subassembly that is vertically movable relative to the housing with suitable switches arranged for detecting when a reading is completed and for automatically calibrating the instrument on the test block.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: March 11, 1980
    Assignee: Ical, Incorporated
    Inventors: Charles R. Munnerlyn, Terrance N. Clapham