Patents by Inventor James Burkhalter

James Burkhalter 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).

  • Method for determining and correcting vision
    Publication number: 20050124983
    Abstract: A method for enhancing vision of an eye includes a laser delivery system having a laser beam for ablating corneal material from the cornea of the eye. Measurements are made to determine an optical path difference between a plane wave and a wavefront emanating from the retina of the eye for a location at a surface of the cornea. An optical correction is provided to the laser delivery system for the location based on the optical path difference and refractive indices of media through which the wavefront passes. The optical correction includes dividing the optical path difference by a difference between an index of refraction of corneal material and an index of refraction of air. The laser beam is directed to the location on the surface of the cornea and corneal material ablated at the location in response to the optical correction to cause the wavefront to approximate the shape of the plane wave at that location.
    Type: Application
    Filed: January 10, 2005
    Publication date: June 9, 2005
    Inventors: Rudolph Frey, James Burkhalter, Neil Zepkin, Edward Poppeliers, John Campin
  • Apparatus and method for objective measurement and correction of optical systems using wavefront analysis
    Publication number: 20050099600
    Abstract: A method for enhancing vision of an eye includes a laser delivery system having a laser beam for ablating corneal material from the cornea of the eye. Measurements are made to determine an optical path difference between a plane wave and a wavefront emanating from the retina of the eye for a location at a surface of the cornea. An optical correction is provided to the laser delivery system for the location based on the optical path difference and refractive indices of media through which the wavefront passes. The optical correction includes dividing the optical path difference by a difference between an index of refraction of corneal material and an index of refraction of air. The laser beam is directed to the location on the surface of the cornea and corneal material ablated at the location in response to the optical correction to cause the wavefront to approximate the shape of the plane wave at that location.
    Type: Application
    Filed: December 20, 2004
    Publication date: May 12, 2005
    Inventors: Rudolph Frey, James Burkhalter, Neil Zepkin, Edward Poppeliers, John Campin