Surgery – Instruments – Corneal cutter or guide for corneal cutter
Patent
1994-08-18
1996-07-02
Thaler, Michael H.
Surgery
Instruments
Corneal cutter or guide for corneal cutter
128898, 30358, 30316, A61F 900, A61B 1900
Patent
active
055317537
ABSTRACT:
A surgical procedure to correct astigmatism comprises performing a first pair of incisions across the cornea's steepest meridian at a first optical zone and an additional two to four incisions across the bisector meridians at a second optical zone that is greater than that of the first optical zone. This procedure is effective to improve astigmatism up to 6D without many of the detrimental effects of the known procedures. The invention further comprises a set of markers to be used by a surgeon for marking on the cornea the pattern of incisions to be made following the procedure of the invention.
REFERENCES:
patent: 4417579 (1983-11-01), Soloviev et al.
patent: 4515157 (1985-05-01), Fedorov et al.
patent: 4705053 (1987-11-01), Givens
patent: 4739761 (1988-04-01), Grandon
Thornton, Ch. 5 in the book entitled "Radial Keratotomy Surgical Techniques", edited by Donald R. Sanders M.D., PhD, published by Slack, Inc., Thorofare, NJ, 1986.
Lindquist et al., Ch. 6 in the book entitled "Radial Keratotomy Surgical Techniques", idem . . . .
Hofmann, Ch. 14 in the book entitled "Refractive Corneal Surgery", edited by Donald R. Sanders M.D., PhD; Robert F. Hoffman, M.D.; and James J. Salz, published by Slack, Inc., Thorofare, NJ, 1986.
Lindstrom, Linsdstrom Nomogram, published by Chiron Opthalmics, 1990.
Ellis, William, M.D., F.A.C.S., pp. 27 and 28 in the book entitled "Radial Keratotomy and Astigmatism Surgery", published by Keith C. Terry & Associates Medical Textbook Division, Irvine, CA 1986.
Copy of 2-sided advertisement entitled "Magnificent Markers"by Mastel.
Cantor Philip Stephen
Markow Scott B.
Thaler Michael H.
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