Induced high order aberrations corresponding to geometrical transformations
AssigneeAMO Development, LLC
InventorGuang-ming Dai
Life of this patent
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Abstract
Wavefront measurements of eyes are typically taken when the pupil is in a first configuration in an evaluation context. The results can be represented by a set of basis function coefficients. Prescriptive treatments are often applied in a treatment context, which is different from the evaluation context. Hence, the patient pupil can be in a different, second configuration, during treatment. Systems and methods are provided for determining a transformed set of basis function coefficients, based on a difference between the first and second configurations, which can be used to establish the vision treatment.
Claims20
A method of determining a high order aberration induced by a change in geometrical configuration in an eye of a patient, comprising, through the use of a computer processor:
- inputting a first geometrical configuration of the eye;
- inputting an original set of coefficients for a basis function characterizing the first geometrical configuration of the eye, wherein the basis function can be separated into a product of a first set of radial polynomials and a first triangular function;
- inputting a second geometrical configuration of the eye;
- inputting a transformed set of coefficients for the basis function, wherein the transformed set of coefficients are based on the first geometrical configuration of the eye, the original set of coefficients, and the second geometrical configuration of the eye, such that each coefficient of the transformed set of coefficients is based on a corresponding coefficient of the original set of coefficients and a corresponding polynomial;
- and
- determining the induced high order aberration based on the transformed set of coefficients.
A system for determining a high order aberration induced by a change in geometrical configuration in an eye of a patient, the system comprising:
- a first module that accepts a first geometrical configuration of the eye;
- a second module that accepts an original set of coefficients for a basis function characterizing the first geometrical configuration of the eye, wherein the basis function can be separated into a product of a first set of radial polynomials and a first triangular function;
- a third module that accepts a second geometrical configuration of the eye;
- a fourth module that determines a transformed set of coefficients for the basis function, wherein the transformed set of coefficients are based on the first geometrical configuration of the eye, the original set of coefficients, and the second geometrical configuration of the eye, such that each coefficient of the transformed set of coefficients is based on a corresponding coefficient of the original set of coefficients and a corresponding polynomial;
- and
- a fifth module that determines the induced high order aberration based on the transformed set of coefficients.
A computer program product for determining a high order aberration induced by a change in geometrical configuration in an eye of a patient, the computer program product comprising:
- code for accepting a first geometrical configuration of the eye;
- code for determining an original set of coefficients for a basis function characterizing the first geometrical configuration, wherein the basis function can be separated into a product of a first set of radial polynomials and a first triangular function;
- code for accepting a second geometrical configuration of the eye;
- code for determining a transformed set of coefficients for the basis function, wherein the transformed set of coefficients are based on the first geometrical configuration of the eye, the original set of coefficients, and the second geometrical configuration of the eye, such that each coefficient of the transformed set of coefficients is based on a corresponding coefficient of the original set of coefficients and a corresponding polynomial;
- and
- code for determining the induced high order aberration based on the transformed set of coefficients.
Dependencies are inferred from the claim text.