Patent ID: 8978660
Filing Date: 2015-03-17
Classification: A61F

Abstract:
1. A method for determining an ablation treatment for an eye of a patient, comprising: determining an ellipsoid model corresponding to an anterior corneal surface of the eye, the ellipsoid model having an anterior portion, a major axis, and an apex, wherein the major axis intersects the anterior portion at the apex; calculating a nominal ablation pattern for the eye based on the ellipsoid model; determining a tilted orientation of the eye when the patient fixates on a target during a laser ablation procedure, wherein determining the tilted orientation comprises: determining a surface slope of the anterior corneal surface in a first direction extending radially from the apex; determining a surface slope of the anterior corneal surface in a second direction extending radially from the apex, wherein the surface slope in the first direction is steeper than the surface slope in the second direction; determining the ablation treatment by adjusting the nominal ablation pattern based on the surface slope in the first direction and the surface slope in the second direction; and outputting the determined ablation treatment so as to be suitable for use by a laser eye surgery system.