Surgery – Instruments – Light application
Patent
1995-11-03
1998-03-03
Shay, David M.
Surgery
Instruments
Light application
606 2, 606 15, 606 16, 606 17, 128898, A61N 502
Patent
active
057229716
ABSTRACT:
A method for modifying the curvature of a live cornea to correct a patient's vision. First, at least one relatively small opening is made in the cornea for inserting a fiber optic cable or micro-cutting tool therein to create a pocket or cavity with first and second opposed internal surfaces. The laser beam or micro-cutting tool can be directed onto one of the first and second internal surfaces, or both, if needed or desired to incrementally and sequentially ablate or remove three-dimensional portions of the cornea. If a laser beam is used, then a flexible template can be inserted into the opening in the cornea for accurately controlling the pattern to be ablated within the cornea. Preferably, the live cornea is then left alone to collapse and obtain its new refractive power by waiting a set period of time. After waiting the set period of time, the cornea is then examined to determine the new refractive power of the cornea. Now, ocular material can be introduced to the cornea to further modify the curvature of the cornea as needed. The ocular material can be either a fluid or a solid lens or a combination thereof. In either case, the ocular material is transparent or translucent material with either a refractive index substantially the same as the intrastromal tissue of the cornea, or a different refractive index from the intrastromal tissue of the cornea.
REFERENCES:
patent: 3982541 (1976-09-01), L'Esperance, Jr.
patent: 4298004 (1981-11-01), Schachar et al.
patent: 4452235 (1984-06-01), Reynolds
patent: 4655774 (1987-04-01), Choyce
patent: 4665913 (1987-05-01), L'Esperance, Jr.
patent: 4669466 (1987-06-01), L'Esperance
patent: 4676790 (1987-06-01), Kern
patent: 4678422 (1987-07-01), York
patent: 4729372 (1988-03-01), L'Esperance, Jr.
patent: 4744360 (1988-05-01), Bath
patent: 4799931 (1989-01-01), Lindstrom
patent: 4840175 (1989-06-01), Peyman
patent: 4903695 (1990-02-01), Warner et al.
patent: 4961744 (1990-10-01), Kilmer et al.
patent: 5063942 (1991-11-01), Kilmer et al.
patent: 5196026 (1993-03-01), Barrett et al.
patent: 5215104 (1993-06-01), Steinert
patent: 5300118 (1994-04-01), Silvestrini et al.
patent: 5318044 (1994-06-01), Kilmer et al.
patent: 5318047 (1994-06-01), Davenport et al.
patent: 5323788 (1994-06-01), Silvestrini et al.
patent: 5336261 (1994-08-01), Barrett et al.
patent: 5368604 (1994-11-01), Kilmer et al.
patent: 5391201 (1995-02-01), Barrett et al.
patent: 5403335 (1995-04-01), Loomas et al.
patent: 5405384 (1995-04-01), Silvestrini
"Corneal Surgery" by L. Girard, The C.V. Mosby Publishing Company, London 1981 pp. 107-141.
"Lamellar Corneal Stromectomy for the Operative Treatment of Myopia" by Tadeusz Krwawicz, Notes, Cases, Instruments-received in PTO Sep. 1986, pp. 828-833.
"Keratomileusis and Keratophakia in the Surgical Correction of Aphakia" by Barraquer, Cataract Surgery and Special Techniques, pp. 270-289.
"Refractive Keratoplasty: Acute Morphologic Features," by Baumgartner et al, The CLAO Journal-Apr. 1985, vol. II, No. 2, pp. 163-169.
"Epikeratophakia: Techniques, Complications, and Clinical Results" by Werblin, Ophthalmology, pp. 45-58.
LandOfFree
Intrastromal corneal modification does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Intrastromal corneal modification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intrastromal corneal modification will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2244690