Laser surgery method

  • US 5,108,388 A
  • Filed: 10/16/1987
  • Issued: 04/28/1992
  • Est. Priority Date: 12/15/1983
  • Status: Expired due to Term
First Claim
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1. A method for producing a surgical excision of controlled depth and shape in a cornea by ablative photochemical decomposition of corneal tissue without thermal damage to the corneal tissue, said method comprising the steps of:

  • (a) generating a laser beam in the far ultraviolet region of the energy spectrum and at a wavelength selected to produce ablative photochemical decomposition of corneal tissue without thermal damage to the corneal tissue and(b) directing said radiation in a controlled manner onto said corneal tissue to induce ablative photochemical decomposition thereof in a volumetric removal of said corneal tissue without thermal heating to create a surgical excision of controlled depth and shape with depth penetration into the stroma.

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