Patents by Inventor Kenneth G. Spears

Kenneth G. Spears 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 correcting refractive disorders
    Patent number: 5348551
    Abstract: A method for changing the shape of the cornea of an eye to correct refractive disorders comprises employing laser radiation having a selected wavelength, beam pattern, and beam power profile, and employing this radiation for a selected time duration, wherein the wavelength, beam pattern, beam power profile and time duration are chosen to selectively kill or injure keratocytes and to avoid shrinking the collagen in a selected treatment volume of the cornea which has a posterior boundary which is at least 10% of the total stromal depth, and preferably between 50-90% of the stromal depth.
    Type: Grant
    Filed: March 23, 1993
    Date of Patent: September 20, 1994
    Assignee: Kerus Medical Systems
    Inventors: Kenneth G. Spears, Gerald Horn
  • Correction of the optical focusing system of the eye using laser thermal keratoplasty
    Patent number: 5263951
    Abstract: A laser system applies energy of the proper wavelength to the cornea of the eye and the stroma of the cornea is thereby heated and changes permanently, causing the shape of the cornea to change. Laser treatment patterns are disclosed for correcting nearsightedness, farsightedness and astigmatisms.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: November 23, 1993
    Assignee: Kerus Medical Systems
    Inventors: Kenneth G. Spears, Gerald Horn