Method and apparatus for ophthalmological surgery

Details Method and apparatus for ophthalmological surgery Method and apparatus for ophthalmological surgery

A - Human Necessities

61

F

327/1.2

A61F 9/00 (2006.01) A61F 9/01 (2006.01) A61B 17/30 (2006.01) A61F 9/008 (2006.01)

Patent

CA 1259105

METHOD AND APPARATUS FOR OPHTHALMOLOGICAL SURGERY ABSTRACT OF THE DISCLOSURE The invention contemplates controlled ablation of the cornea, using ultraviolet laser radiation, wherein irradiated flux density and exposure time are so controlled as to achieve desired depth of the ablation. Sculpturing action results from controlled change of projected laser-spot size, in the course of a given treatment, wherein, in one illustrative case, projected laser-spot size ranges from a maximum which covers the entire area to be treated, down to a predetermined minimum tolerable size, wherein cornea-curvature change is myopia-corrective. Further illustrative techniques and situations are also disclosed, for achievement of hyperopia correction, for astigmatism correction, and in connection with corneal-transplant operations.

510881

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