Patent ID: 6162210
Filing Date: 2000-12-19
Classification: A61B,A61F

Abstract:
A technique for creating a shallow-plane weld-type lesion in a band within corneal lamellae for making the cornea slightly prolate in shape, comprising:fitting a prolate-shaped lens-prosthesis over a patient's cornea thereby making the corneal shape slightly prolate;delivering a dose of cryo-spray source toward the lens-prosthesis and cornea thereby causing a cyro-wave to commence propagation through the cornea;delivering a dose of photonic energy at a particular fluence toward the lens-prosthesis and cornea thereby causing such photonic energy to be absorbed in the cornea;wherein the propagation of photonic energy overtakes the cyro-wave and the particular fluence denatures molecules therein to create a weld-type lesion in front of the advancing cryo-wave thereby causing a weld-type lesion for maintaining the cornea in a slightly prolate shape.