Laser corneal surgery

Details Laser corneal surgery Laser corneal surgery

1991-12-19

1995-06-13

Shay, David M.

Surgery

Instruments

Light application

606 10, 606 14, A61N 506

Patent

active

054238013

ABSTRACT:
A method and system for reshaping Bowman's membrane, which lies directly below the anterior epithelial surface of the cornea, to provide correction of refractive errors in the eye by photoablation of selective regions of the Bowman's membrane without substantial penetration into the stroma of the eye is disclosed including a laser and a beam-shaping mask, disposed between the laser and the surface of the cornea, which imposes a defined ablation profile upon the Bowman's membrane by laser radiation. The system can also include a feedback control for measuring the effectiveness of the laser during operation and for controlling the laser such that the reprofiling operation is substantially confined to the Bowman's membrane throughout the procedure. The beam-shaping mask can include either an aperture e.g., a beam-shaping stop means alone or in combination with a beam-shaping window, or an mask which is erodible or otherwise graded in its absorptive capacity to present a predefined profile of resistance to the laser radiation.

REFERENCES:
patent: 3558208 (1971-01-01), Hudson
patent: 3703176 (1972-11-01), Vassilliadis et al.
patent: 3769963 (1973-11-01), Goldman et al.
patent: 3941973 (1976-03-01), Luck, Jr. et al.
patent: 3982541 (1976-09-01), L'Esperance, Jr.
patent: 4173980 (1979-11-01), Curtin
patent: 4266549 (1981-05-01), Kimura
patent: 4309998 (1982-01-01), Aaron nee Rosa et al.
patent: 4326529 (1982-04-01), Doss et al.
patent: 4381007 (1983-04-01), Doss
patent: 4461294 (1984-07-01), Baron
patent: 4527043 (1985-07-01), Hashiura et al.
patent: 4538608 (1985-09-01), L'Esperance, Jr.
patent: 4648400 (1987-03-01), Schneider et al.
patent: 4665913 (1987-05-01), L'Esperance, Jr.
patent: 4669466 (1987-06-01), L'Esperance
patent: 4686979 (1987-08-01), Gruen et al.
patent: 4718418 (1988-03-01), L'Esperance, Jr.
patent: 4721379 (1988-01-01), L'Esperance
patent: 4729372 (1988-03-01), L'Esperance, Jr.
patent: 4732148 (1988-03-01), L'Esperance, Jr.
patent: 4770172 (1988-09-01), L'Esperance, Jr.
patent: 4773414 (1988-09-01), L'Esperance, Jr.
patent: 4798204 (1989-01-01), L'Esperance, Jr.
patent: 4856513 (1989-08-01), Muller
patent: 4941093 (1990-07-01), Marshall et al.
patent: 4994058 (1991-02-01), Raven et al.
Fine et al., "Preliminary Observations on Ocular Effects . . . ", vol. 64, No. 2, American Journal of Ophthalmology, pp. 209-222 (Aug. 1967).
Beckman, et al., "Limbectomies, Keratectomies, And Keratostomies Performed . . . " vol. 71, American Journal of Ophthalmology, pp. 1277-1283 (Jun. 1871).
Mainster, "Ophthalmic applications of infrared lasers--thermal considerations" vol. 18, No. 4, Invst. Ophthal. and Vis. Sci., pp. 414-420 (1979).
Peyman, et al., "Modification of Rabbit Corneal Curvature With Use of Carbon Dioxide Laser Burns", vol. 11, No. 5, Ophthalmic Surgery, pp. 325-329 (May 1980).
Keates et al., "Carbon Dioxide Laser Beam Control for Corneal Surgery", vol. 12, No. 2, Ophthalmic Surgery, pp. 117-122, (Feb. 1981).
Girard, "Refractive Keratoplasty", vol. 2, Corneal Surgery, pp. 142-171 (1981).
Taboada et al., "Response Of The Corneal Epithelium To KrF Excimer Laser Pulses", vol. 40, Health Physics, pp. 677-683 (May 1981).
Chetverukhin et al., "Refraction Thermokeratoplasty and Laser Kerotoplasty", Vestn. Oftal., pp. 67-69 (USSR 1982).
Srinivasan et al., "Far-UV Photoetching of Organic Material", Laser Focus, (May 1983).
Srinivasan, "Kinetics of the ablative photodecomposition of organic polymers . . . ", vol. B1, J. of Vac. Sci. Technol., pp. 923-926 (1983).
Srinivasan, "Action of Far-Ultraviolet Light on Organic Polymer Films . . . ", pp. 12-14 (Oct. 1983).
Trokel, et al. "Excimer Laser Surgery of the Cornea", vol. 96, American Journal of Ophthalmology, pp. 710-715 (1983).
Galbavy, "Use of Diamond Knives in Ocular Surgery", vol. 15, No. 3, Ophthalmic Surgery, pp. 203-205 (Mar. 1984).
Puliafito et al., "Excimer Laser Ablation of the Cornea and Lens", vol. 92, No. 6, Ophthalmology, pp. 741-748 (Jun. 1985).
L'Esperance, Jr., "New laser systems and their potential clinical usefulness", Trans. New Orleans Acad. of Ophthalmol., pp. 182-209 (1985).
L'Esperance, Jr., "Current status of ophthalmic photovaporization therapy", Trans. New Orleans Acad. of Ophthalmol, pp. 231-255 (1985).
O'Hara et al., vol. 11 IBM Technical Disclosure Bulletin, pp. 1168-1169 (1969).
Binder et al., "Refractive Keratoplasty" vol. Arch. Ophthalmol. pp. 802-806 (1982).

Affiliated with

Also associated with

Rating

Laser corneal 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 Laser corneal surgery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser corneal surgery will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1306267