Method and Apparatus for Automated Simulation and Design of Corneal Refractive Procedures

Barzin Mobasher (Inventor), Subramaniam Rajan (Inventor)

Research output: Patent

Abstract

A technique for automated design of a corneal surgical procedure includes topographical measurements of a patient's eye to obtain corneal surface topography. Conventional techniques are used to obtain the thickness of the cornea and the intgraocular pressure. The topographical information is interpolated and extrapolated to fit the nodes of a finite element analysis model of the eye, which is then analyzed to predict the initial state of stress of the eye and obtain pre-operative curvatures of the cornea. ;Incision data constituting the "initial" surgical plan is incorporated into the finite element analysis model. A new analysis then is performed to simulate resulting deformations, stresses, and curvatures of the eye. They are compared to the original values thereof and to the vision objective.
Original languageEnglish (US)
StatePublished - Sep 29 1995

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Finite element method
Surface topography

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title = "Method and Apparatus for Automated Simulation and Design of Corneal Refractive Procedures",
abstract = "A technique for automated design of a corneal surgical procedure includes topographical measurements of a patient's eye to obtain corneal surface topography. Conventional techniques are used to obtain the thickness of the cornea and the intgraocular pressure. The topographical information is interpolated and extrapolated to fit the nodes of a finite element analysis model of the eye, which is then analyzed to predict the initial state of stress of the eye and obtain pre-operative curvatures of the cornea. ;Incision data constituting the {"}initial{"} surgical plan is incorporated into the finite element analysis model. A new analysis then is performed to simulate resulting deformations, stresses, and curvatures of the eye. They are compared to the original values thereof and to the vision objective.",
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AU - Rajan, Subramaniam

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N2 - A technique for automated design of a corneal surgical procedure includes topographical measurements of a patient's eye to obtain corneal surface topography. Conventional techniques are used to obtain the thickness of the cornea and the intgraocular pressure. The topographical information is interpolated and extrapolated to fit the nodes of a finite element analysis model of the eye, which is then analyzed to predict the initial state of stress of the eye and obtain pre-operative curvatures of the cornea. ;Incision data constituting the "initial" surgical plan is incorporated into the finite element analysis model. A new analysis then is performed to simulate resulting deformations, stresses, and curvatures of the eye. They are compared to the original values thereof and to the vision objective.

AB - A technique for automated design of a corneal surgical procedure includes topographical measurements of a patient's eye to obtain corneal surface topography. Conventional techniques are used to obtain the thickness of the cornea and the intgraocular pressure. The topographical information is interpolated and extrapolated to fit the nodes of a finite element analysis model of the eye, which is then analyzed to predict the initial state of stress of the eye and obtain pre-operative curvatures of the cornea. ;Incision data constituting the "initial" surgical plan is incorporated into the finite element analysis model. A new analysis then is performed to simulate resulting deformations, stresses, and curvatures of the eye. They are compared to the original values thereof and to the vision objective.

M3 - Patent

ER -