Patent ID: 7992569
Filing Date: 2011-08-09
Classification: A61F

Abstract:
1. A refractive ophthalmic treatment method comprising: receiving pre-operative data concerning a cornea on which the treatment will be performed; subtracting a programmed optical zone correction from corneal measurements provided in the pre-operative data to provide a predicted location of a post-operative optical zone edge; calculating a predicted curvature of the cornea at the edge of the optical zone, near the edge of the optical zone, or combinations thereof after application of the programmed optical zone correction; calculating a customized transition zone pattern which addresses curvature discontinuity by eliminating its occurrence in the programmed optical zone, near the programmed optical zone, or combinations thereof, applying the customized transition zone pattern to a designed ablation zone pattern to provide an updated ablation zone pattern, performing an ablation on the cornea based on the updated ablation zone pattern.