Surgery – Instruments – Light application
Patent
1991-05-15
1993-06-15
Shay, David M.
Surgery
Instruments
Light application
600 10, 600 12, A61B 506
Patent
active
052193438
ABSTRACT:
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 precharacterized distribution of flux density across the cross-section of laser-beam projection, in the context of beam size, at cornea incidence, to match the area to be ablated, and the duration of exposure determines the extent of curvature change. Illustrative techniques and situations are disclosed, for myopia correction, for hyperopia correction, and for astigmatism correction.
REFERENCES:
patent: 4156124 (1979-05-01), Macken et al.
patent: 4173980 (1979-11-01), Curten
"Excimer Laser Surgery of the Cornea"; by Trokel et al.; Am. J. Ophthalmology; vol. 96; Dec. 1983 pp. 710-715.
"In Vivo Experiments with the Excimer Laser Technical Parameters & Healing Process"; by Seiler et al.; Ophthalmologica, Basel, vol. 192 pp. 65-70 (1986).
"Carbon Dioxide Laser Beam Control for Corneal Surgery" by Keates et al.; Ophthalmic Surgery; vol. 12, No. 2; Feb. 1981 pp. 117-122.
"Advanced Techniques in Corneal Microsurgery vol. 2 Corneal Surgery" by Girard; The C. W. Mosby Co. St. Louis 1981.
Shay David M.
VISX Incorporated
LandOfFree
Apparatus for performing ophthalmogolical surgery does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for performing ophthalmogolical surgery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for performing ophthalmogolical surgery will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1039460