Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Methods of use
Reexamination Certificate
2006-05-16
2006-05-16
Imam, Ali (Department: 3735)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Methods of use
C623S004100, C623S006110
Reexamination Certificate
active
07044604
ABSTRACT:
A method of deriving a prediction model and calculating a predicted lens power to provide a desired post-operative spherical equivalent to correct myopia in a phakic eye of a patient using an intraocular lens includes measuring and determining the predictive significance of certain pre-operative characteristics of the eye, including cycloplegic and manifest spherical equivalent, vertex distance, anterior chamber depth, axial length, and keratometry. The prediction model is derived using multiple regression analysis on the pre-operative and post operative data. Measured data corresponding to a particular patient is used in the lens power prediction model to calculate the predicted lens power for implantation in the patient.
REFERENCES:
patent: 5116115 (1992-05-01), Lange et al.
patent: 5728155 (1998-03-01), Anello
patent: 5864378 (1999-01-01), Portney
patent: 5964802 (1999-10-01), Anello et al.
patent: 5984962 (1999-11-01), Anello et al.
patent: 6024447 (2000-02-01), Portney
patent: 6126286 (2000-10-01), Portney
patent: 6419359 (2002-07-01), Edwards
patent: 6450642 (2002-09-01), Jethmalani et al.
patent: 6626538 (2003-09-01), Arrowsmith
patent: 6634751 (2003-10-01), Turner et al.
patent: 6824266 (2004-11-01), Jethmalani et al.
patent: 2004/0054358 (2004-03-01), Cox et al.
patent: 2005/0225721 (2005-10-01), Harris et al.
S. Karger et al, A Comparative Study of Eight Intraocular Lens Calculation Formulas, Ophthalmologica, 1991, 148-153, vol. 203, U.S.A.
Kenneth J. Hoffer, M.D., The Hoffer Q formula: A Comparison of Theoretic and Regression Formulas, J Cataract Refract Surg, Nov. 1993, 700-712, vol. 19, U.S.A.
Thomas Olsen, M.D. et al, Theoretical Versus SRK I and SRK II Calculation of Intraocular Lens Power, J Cataract Refract Surg, Mar. 1990, 217-225, vol. 16, U.S.A.
Donald R. Sanders, M.D.,Ph.D. et al, Comparison of the SRK/T Formula and Other Theoretical and Regression Formulas, May 1990, 341-346, vol. 16, U.S.A.
Milton Katz et al, The Human Eye as an Optical System, Clinical Ophthalmology, 1998, 1-56, vol. 1, U.S.A.
Jack T. Holladay, M.D., Refractive Power Calculations for Intraocular Lenses in the Phakic Eye, American Journal of Ophthalmology, Jul. 1993, 63-66, vol. 116, U.S.A.
Jack T. Holladay et al, Improving the Predictability of Intraocular Lens Power Calculations, Arch Ophthalmol, Apr. 1986, 539-541, vol. 104, U.S.A.
G.L. Van Der Heijde, Some Optical Aspects of Implantation of an IOL in a Myopic Eye, Eur J Implant Ref Surg, Dec. 1989, 245-248, vol. 1, Amsterdam, The Netherlands.
Paul U. Fechner, M.D., et al, The Correction of Myopia by Lens Implantation Into Phakic Eyes, American Journal of Ophthalmology, Jun. 1989, 659-663, vol. 107 No. 6, U.S.A.
Donald R. Sanders, M.D., Ph.D. et al, A-Scan Biometry and IOL Implant Power Calculations, American Academy of Ophthalmology Focal Points, Dec. 1995, 1-14, vol. 13 No. 10, U.S.A.
Paul U. Fechner, M.D. et al, Worst-Fechner Biconcave Minus Power Phakic Iris-Claw Lens, Journal of Refractive Surgery, Mar./Apr. 1999, 93-105, vol. 15, U.S.A.
John Retzlaff, M.D. et al, A Manual of Implant Power Calculation, SRK Formula, 1-41, U.S.A.
Jack T. Holladay, MD, MSEE, Standardizing Constants for Ultrasonic Biometry, Keratometry, and Intraocular Lens Power Calculations, J Cataract Refractive Surgery, Nov. 1997, 1356-1370, vol. 23, U.S.A.
Kristian Naeser, MD, Intraocular Lens Power Formula Based on Vergence Calculation and Lens Design, J Cataract Refractive Surgery, Oct. 1997, 1200-1207, vol. 23, U.S.A.
Thomas Olsen, M.D. et al, Intraocular Lens Power Calculation With an Improved Anterior Chamber Depth Prediction Algorithm, J Cataract Refractive Surgery, May 1995, 313-319, vol. 21, U.S.A.
Jack T. Holladay, M.D. et al, A Three-Part System For Refining Intraocular Lens Power Calculations, J Cataract Refractive Surgery, Jan. 1988, 17-24, vol. 14, U.S.A.
Imam Ali
Patterson Mark J.
Sanders John R
Waddey & Patterson
LandOfFree
Method for determining the power of an intraocular lens used... 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 for determining the power of an intraocular lens used..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining the power of an intraocular lens used... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3552341