Surgery – Instruments – Light application
Patent
1997-04-18
2000-05-02
Shay, David M.
Surgery
Instruments
Light application
606 3, 606 10, A61N 506
Patent
active
060567406
ABSTRACT:
A method for performing concurrent spherical and cylindrical corrections to the corneal surface of the eye to reduce myopia and astigmatism. A laser beam irradiates the corneal surface via a variable diameter iris and a slot produced by a pair of translatable blades. The width of the slot and the diameter of the iris are varied as the laser is pulsed to produce a toric ablation of the corneal surface. Alternatively, the laser beam is passed through a succession of apertures in a tilted variable aperture element to produce toric ablation. The total number of laser pulses required to effect both types of correction is equal to the number required for the spherical correction alone, reducing the laser power and the procedure time. The toric ablation produces no steep end walls as with standard cylindrical ablation procedures, thereby eliminating hyperopic shift and minimizing flattening along the ablated cylinder axis.
REFERENCES:
patent: 3330182 (1967-07-01), Gerber et al.
patent: 3710798 (1973-01-01), Bredemeir
patent: 3769963 (1973-11-01), Goldman et al.
patent: 3828188 (1974-08-01), Kraskow et al.
patent: 3982841 (1976-09-01), L'Esperance
patent: 4170997 (1979-10-01), Pinnow et al.
patent: 4173980 (1979-11-01), Curtin
patent: 4266548 (1981-05-01), Davi
patent: 4309998 (1982-01-01), Rosa et al.
patent: 4409979 (1983-10-01), Rousset et al.
patent: 4461294 (1984-07-01), Baron
patent: 4485499 (1984-12-01), Castelman
patent: 4538608 (1985-09-01), L'Esperance
patent: 4665913 (1987-05-01), L'Esperance
patent: 4669466 (1987-06-01), L'Esperance
patent: 4686979 (1987-08-01), Gruen et al.
patent: 4688201 (1987-08-01), Towner et al.
patent: 4729372 (1988-03-01), L'Esperance
patent: 4732148 (1988-03-01), L'Esperance
patent: 4744360 (1988-05-01), Bath
patent: 4768874 (1988-09-01), Webb et al.
patent: 4769963 (1988-09-01), Goldman et al.
patent: 4770172 (1988-09-01), L'Esperance, jr.
patent: 4773414 (1988-09-01), L'Esperance
patent: 4784135 (1988-11-01), Blum et al.
patent: 4825865 (1989-05-01), Zelman
patent: 4838266 (1989-06-01), Koziol et al.
patent: 4846172 (1989-07-01), Berlin
patent: 4911711 (1990-03-01), Telfair et al.
patent: 4941093 (1990-07-01), Marshall et al.
patent: 4973330 (1990-11-01), Azema et al.
patent: 4994058 (1991-02-01), Raven et al.
patent: 5103074 (1992-04-01), Watanabe et al.
patent: 5395356 (1995-03-01), King et al.
patent: 5411501 (1995-05-01), Klopoleh
patent: 5423801 (1995-06-01), Marshall et al.
patent: 5461212 (1995-10-01), Seiler et al.
patent: 5713892 (1998-02-01), Shimmich
Deposition of Dr. Rangaswamy Srinivasan, p. 27 (lines 8-20, Jan. 16, 1990 (Interference No. 102,026, Trokel v. L'Esperance).
Affidavit of Louis J. Girard, (United States application Serial No. 891,169 to L'Esperance, executed Dec. 2, 1987).
Myopia Surgery, McMillan Publishing Co, Inc., New York, Toronto, London, Chapter 5 by W. Andrew Maxwell and Lee T. Nordan entitled "Myopic Keratomileusis," (1990) pp. 129-134.
Ophthalmologie, Louis Guillaumat, pp. 344 and 346 entitled "Pathologie Regionale Et Tissuelaire," publication date 1953.
"Lesion Duration and Curvature change in the Cornea Following Exposure to a Carbon Dioxide Laser," Mikesell et al., Report SAM-TR-79-26 (1979).
"Reshaping the Cat Corneal Anterior Surface Using a High-Speed Diamond Fraise," Olson et al.; Ophthalmic Surgery, (1980) pp. 784-786.
"Refractive Keratoplasty--Microkeratome Evaluation," Binder et al., Arch Ophthalmol., vol. 100, (1982), pp. 802-806.
"Excimer Lasers in Medicine," David Muller; Lasers & Applications (1986) pp. 85-89.
"Laser Shaping of Cornea Shows Promise at Correcting Eyesight," Jerry E. Bishop; Wall Street Journal, Technology Section, Jan. 30, 1987.
Reprint from Laser Surg. Med., 6, 241, 1986, abstract entitled "Corneal surgery with an ER:YAG Laser at 2.94 um., " Wolbarsht et al.
"Photoablative Reprofiling of the Cornea Using an Excimer Laser: Photorefractive Keratectomy," Marshall et al.; Lasers in Ophthalmology, vol. 1 No. 1 (1986), pp. 21-48.
"Quantitation of Corneal Ablation by Ultraviolet laser Light," Krueger et al.; Arch Ophthalmol. vol. 103, (1985), pp. 1741-1742.
"Guest Editorial: Excimer lasers in Ophthalmology," Steiner et al.; J. Cataract. Refract. Surg., vol. 15, (1989) pp. 369-370.
"Safety Fears Focused on `healing` Laser," Jeff Hecht; New Scientisit, vol. 134, No. 1825, Technology Section, Jun. 13, 1992, p. 18.
Statutory Declaration of Professor John Marshall, prepared in connection with an Opposition by Summit Technology, Inc. to European patent No. 0 218 427, and executed on Sep. 17, 1993.
Statutory Declaration of Professor Carmen A. Puliafito, prepared in connection with an Opposition by Summit Technology, Inc. to European patent No. 0 218 427, and executed on Aug. 30, 1993.
Statutory Declaration of Professor Dr. Theo Seiler, prepared in connection with an Opposition by Summit Technology, Inc. to European patent No. 0 218 427, and executed on Aug. 5, 1993.
"Photorefractive Keratectomy (PRK)" Excimer Laser and Radial Keratotomy; World Wide Web page http://www.mdweb.com/uslaser/prk.htm; (2 pages).
"The PRK Experience", Maddox Excimer Laser Center PRK Brochure at World Wide Web page http://www.excimernet.com/MPRKbody.htm; (22 pages).
Affidavit of Stephen L. Trokel, prepared in connection with opposition to European application No. 86307420.9-2305/0218427 and 87306826.6-2302/0257836, and executed on Dec. 5, 1995.
"Beyond Glasses!," Armstrong et al.; UC Books (1997), Title page and copyright page, pp. 4 and 5.
Printout of a database search on LEXIS for articles citing the Dec. 15, 1983 Trokel et al. article.
Apr. 20, 1998 letter from Jan Wetzel La Vigne to Mr. Larry Woody at VISX Corporation.
"Excimer Lasers in Ophthalmology", McGhee et al., Butterworth-Heinemann press, 1997, copy of the title page, the copyright page, and the table of contents pages.
"Laser Interactions With the Cornea," Krauss et al.; Survey of Ophthalmology, vol. 31, No. 1, Jul-Aug. (1986), pp. 37-53.
"An Acute Light and Electron Microscopic Study of Ultraviolet 193-nm Excimer Laser Corneal Incisions," Berns et al., Ophthalmology, vol. 95, No. 10, (1988), pp. 1422-1433.
"Excimer Laser Radial Keratectomy in the Living Human Eye: A Preliminary Report," Tenner et al., Journal of Refractive Surgery, vol. 4, No. 1, (1988), pp. 5-8.
"In Vivo Experiments With the Excimer Laser--Technical Parameters and Healing Processes," Seiler et al.; Ophthalmologica, vol. 192 (1986), pp. 65-70.
"Wound Healing Following Excimer Laser Radial Keratectomy," Rosa et al.; J. Cataract. Refract. Surg., vol. 14 (1988), pp. 173-179.
Interim Report entitled "Ocular Effects of Ultraviolet Laser Radiation," Joseph Zuclich, Report No. SAM-TR-74-32 (1974).
"Quantitative and Ultrastructural Studies of Excimer laser Ablation of the Cornea at 193 and 248 Nanometers," Puliafito et al.; Lasers in Surgery and Medicine, vol. 7 (1987), pp. 155-159.
Final Report entitled "Corneal Damage Thresholds for Hydrogen Flouride and Deuterium Fluoride Chemical Lasers," Irving L. Dunsky, et al.; Report No. SAM-TR-73-51 (1973).
"Human Excimer Laser Keratectomy: Short-Term Histopathology," L'Esperance et al.; Journal of Refractive surgery, vol. 4, No. 4 (1988), pp. 118-124.
"Traumatic Corneal Abrasions Following Photorefractive Keratectomy," James J. Salz; Refractive and Corneal Surgery, vol. 10, (1994), pp. 36-37.
"The Ultrastructure of Well-Healed Lenticles in Keratomileusis," Yamaguchi et al.; Dec. 1983, 90 (12) p. 1495-506, ISSN 0161-6420 (Dialog).
"Carbon Dioxide Laser Beam Control for Corneal Surgery," Richard Keates et al.; Ophthalmic Surgery vol. 12, No. 2 (1981), pp. 117-122.
"Biomechanical Study of Corneal Stability After Photorefractive Keratectomy," A. Bohm et al.; Feb. 1997, 94 (2) p. 10-9-13, ISSN 0941-293X (Dialog).
"An Experiment Study of the Possibility of Using Carbon Dioxide Laser for Changing the Cornea Refraction," SE Avetisov et al.; Vestnik Oftalmologii, 1982, N5, P32 (Dialog).
Declaration of Dr. Myron L. Wolbarsht, in support of the party L'Esperance's First, Second and Third Motions (Interference No. 102,026, executed Mar. 3, 1989).
U.S. Department of
Shay David M.
VISX Incorporated
LandOfFree
Method and apparatus for combined cylindrical and spherical eye does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for combined cylindrical and spherical eye , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for combined cylindrical and spherical eye will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1590729