Uniform-radiation caustic surface for photoablation
Patent 5490849 Issued on February 13, 1996. Estimated Expiration Date: 
February 13, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 13, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for modification of corneal refractive properties Cornea laser-cutting apparatus Method and apparatus for modification of corneal refractive properties Systems and methods for creating substrate surfaces by photoablation Patent #: 5141506 InventorApplicationNo. 824775 filed on 01/23/1992US Classes:606/5, Recurving or reshaping of the eye219/121.6, Using laser219/121.74, With mirror219/121.75, With lens219/121.77, With sing source219/121.83, With monitoring606/3, With particular wavelength606/13, Applicators606/17, With beam shaping or redirecting (e.g., lens)606/18MirrorExaminersPrimary: Shay, David M.International ClassA61M 005/06AbstractA simultaneously generated caustic surface comprised of high energy photons is created for the purpose of ablating organic materials to within optical accuracies. The apparatus and method are principally for modifying, in vivo, the anterior cornea of the eye to effect refractive correction thereof. A catadioptric system in tandem with a continuously adjustable system of lenses provides a range of spherical or aspherical caustic curvatures throughout which range relatively uniform radiation intensity is maintained over the entire caustic. Ablation monitoring uses both visual and interferometric means; control is performed using interferometry in conjunction with a computer controlled excimer laser.Field of SearchBeam energy control or monitoringMirror Light application Ophthalmic Dermatological Placed in body Angioplasty Applicators With beam shaping or redirecting (e.g., lens) With optical fiber Systems With optical fiber Anastomosis Lithotripsy Cataracts or glaucoma Articulated arm With particular wavelength Recurving or reshaping of the eye Condition responsive Using laser Cutting Shaping With mirror With lens Multiple beams With sing source Method | |
