04718418 is referenced by 312 patents and cites 10 patents.

The invention contemplates use of a scanning laser characterized by ultraviolet radiation to achieve controlled ablative photodecomposition of one or more selected regions of a cornea. Irradiated flux density and exposure time are so controlled as to achieve desired depth of the ablation, which is a local sculpturing step, and the scanning action is coordinated to achieve desired ultimate surface change in the cornea. The scanning may be so controlled as to change the front surface of the cornea from a greater to a lesser spherical curvature, or from a lesser to a greater spherical curvature, thus effecting reduction in a myopic or in a hyperopic condition, without resort to a contact or other corrective auxiliary lens technique, in that the cornea becomes the corrective lens. The scanning may also be so controlled as to reduce astigmatism and to perform the precise incisions of a keratotomy. Still further, the scanning may be so controlled as to excise corneal tissue uniformly over a precisely controlled area of the cornea for precision accommodation of a corneal transplant.

Title
Apparatus for ophthalmological surgery
Application Number
552983
Publication Number
4718418
Application Date
October 8, 1986
Publication Date
January 12, 1988
Inventor
Francis A L Esperance Jr
Englewood
NJ, US
Agent
Hopgood Calimafde Kalil Blaustein & Judlowe
Assignee
LRI
NY, US
IPC
A61B 19/00
A61N 5/06
A61F 9/00
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