Patent ID: 7232436
Filing Date: 2007-06-19
Classification: A61B,A61F

Abstract:
1. A method for altering the optical characteristics of a patient's cornea, said method comprising the steps of: preparing an algorithm to predict a shape for the cornea after collapse of a gas bubble resulting from an intrastromal photoablation; inputting patient data into said algorithm to prepare an initial treatment plan to alter the optical characteristics of the patient's cornea, said initial treatment plan including at least one photoablation location; photoablating a location in the initial treatment plan to create a gas bubble; measuring a wavefront shape for light passing through the cornea after said photoablation step and before said gas bubble collapses; processing said algorithm with said measured wavefront shape to generate an updated treatment plan, said updated treatment plan including at least one photoablation location; and using a laser beam to photoablate tissue at a location in the updated treatment plan.