Finite element modeling of the cornea

Details Finite element modeling of the cornea Finite element modeling of the cornea

2008-01-18

2010-11-30

Frejd, Russell (Department: 2128)

Data processing: structural design, modeling, simulation, and em

Modeling by mathematical expression

C703S011000

Reexamination Certificate

active

07844425

ABSTRACT:
A system and method for simulating a corneal reconfiguration in response to LIOB uses a computer-programmed, finite element model. The model has a plurality of elements; with each element pre-programmed with coefficients based on diagnostic corneal data. Collectively the coefficients replicate biomechanical properties of the cornea. In use, designated biomechanical characteristics on a plurality of selected elements (i.e. selected coefficients) are minimized to simulate LIOB in an actual cornea. A computer then measures the resultant reconfiguration of the cornea model to assess an actual cornea's response to LIOB.

REFERENCES:
patent: 7130835 (2006-10-01), Cox et al.
patent: 2003/0208190 (2003-11-01), Roberts et al.
patent: 2009/0187387 (2009-07-01), Bille
patent: 2009/0318907 (2009-12-01), Bille et al.
Hollman et al., K.W. Strain Imaging of Corneal Tissue with an Ultrasound Elasticity Microscope, Cornea:, Jan. 2002, vol. 21, Iss. 1, pp. 68-73.
Database Compendex [Online], Engineering Information, Inc., New York, US; XIE J-Z et al: “Analytic modeling and simulating of the cornea with finite element method” XP002519239, Database accession No. E20082711349193 abstract & Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)—Medical Imaging and Informatics—2nd International Conference, Mimi 2007, Revised Selected Papers 2008.
Database Medline [Online] US National Library of Medicine (NLM), Bethesda, MD, US; Jan. 2002, Hollman Kyle W et al: “Strain imaging of corneal tissue with an ultrasound elasticity microscope.” XP002519240, Database accession No. NLM11805511 abstract & CORNEA Jan. 2002, vol. 21, No. 1, Jan. 2002, pp. 68-73, ISSN: 0277-3740, Section: Direct Mechanical Elasticity and Finite Element Model.
Database Medline [Online] US National Library of Medicine (NLM), Bethesda, MD, US: Feb. 1998, Hennighausen H et al: “Anterior-posterior strain variation in normally hydrated and swollen rabbit cornea.” XP002519241 Database accession No. NLM9477981 abstract & Investigative Ophthalmology & Visual Science Feb. 1998, vol. 39, No. 2, Feb. 1998, pp. 253-262, ISSN: 0146-0404, Section: Image and Data Analasis the whole document.
Ruiz, L. A., MD. “Preliminary clinical results of non-invasive, intrastromal correction of presbyopia using the FEMTEC femtosecond laser system”, Hawaiian Eye Meeting (2008).
Anderson, K., El-Sheikh, A., & Newson, T., “Application of structural analysis to the mechanical behaviour of the cornea”, The Royal Society, (2004).
Anderson, K., El-Sheikh, A., & Newson, T., “FEA of the biomechanics of procine corneas”, The Structural Engineer, (2004).
Crouch, Jessica R., Merriam, John C., and Crouch, Earl R. “Finite Element Model of Cornea Deformation. ” Medical Image Computing and Computer-Assisted Intervention. Springer Berlin. Heidelberg, Germany, 2005. 591-598.
Scherer, K.,P., Eggert, H., Guth, H., and Stiller, P., “Biomechanical simulations for refractive corneal eye surgery”, Proceedings of the IASTED International Conference, (2001).
Jouve, Francois and Hanna, Khalil, “Computer Simulations of Refractive Surgery and Accomodation Mechanisms”, IUTAM Symposium on Synthesis in Bio Solid Mechanics. Springer Netherlands, (2006).
Zhang, Hongwei, “Finite Element Modeling of the Cornea and its Application in the Refractive Surgery”, A Study of Abberrations in the Human Eye by Zernike Phase Plate Precompensation and Finite Element Modeling Methods, Chapter 1, pp. 1-26, 2007, Heilongjiang, China.

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