Method for performing ophthalmic laser surgery

Details Method for performing ophthalmic laser surgery Method for performing ophthalmic laser surgery

A - Human Necessities

61

F

327/1.2

A61F 9/00 (2006.01) A61F 9/01 (2006.01) A61F 9/008 (2006.01)

Patent

CA 1300689

METHOD FOR PERFORMING OPHTHALMIC LASER 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.

542480

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