INDUCED HIGH ORDER ABERRATIONS CORRESPONDING TO GEOMETRICAL TRANSFORMATIONS

• US 20100253909A1
• Filed: 06/03/2010
• Published: 10/07/2010
• Est. Priority Date: 02/24/2006
• Status: Active Grant

• Current Assignee: AMO Development LLC (Johnson & Johnson)
• Original Assignee: AMO Development LLC (Johnson & Johnson)
• Inventors: Dai, Guang-ming
• Granted Patent: US 8,474,974 B2
• Time in Patent Office: Days
• US Class Current: 351/209
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61B 3/1015 for wavefront analysis
• CPC Class Codes: A61B 3/112 for measuring diameter of pupils
• CPC Class Codes: A61F 2009/00846 Eyetracking
• CPC Class Codes: A61F 2009/00848 based on wavefront
• CPC Class Codes: A61F 2009/00872 Cornea
• CPC Class Codes: A61F 2009/0088 based on wavefront
• CPC Class Codes: A61F 9/00806 Correction of higher orders
• CPC Class Codes: A61F 9/00808 Inducing higher orders, e.g. for correction of presbyopia
• CPC Class Codes: A61F 9/00817 Beam shaping with masks
• CPC Class Codes: G02C 7/024 Methods of designing ophthalmic lenses
• CPC Class Codes: G02C 7/028 Special mathematical design techniques

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.

Claims

1. A method of determining a high order aberration induced by a change in geometrical configuration in an eye of a patient, comprising:

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; and

determining the induced high order aberration based on the transformed set of coefficients.

2. The method according to claim 1, wherein a difference between the first geometrical configuration and the second geometrical configuration comprises a pupil center shift.

3. The method according to claim 1, wherein a difference between the first geometrical configuration and the second geometrical configuration comprises a pupil constriction or a pupil dilation.

4. The method according to claim 1, wherein a difference between the first geometrical configuration and the second geometrical configuration comprises a cyclorotation and a member selected from the group consisting of a pupil center shift, a pupil constriction, and a pupil dilation.

5. The method according to claim 1, wherein the basis function comprises a Zernike basis function.

6. The method according to claim 1, wherein the basis function comprises a Taylor basis function.

7. The method according to claim 1, wherein the basis function comprises a Seidel basis function.

8. The method according to claim 1, wherein the induced high order aberration comprises a member selected from the group consisting of coma, secondary coma, trefoil, primary spherical aberration, secondary spherical aberration, secondary astigmatism, and tertiary astigmatism.

9. The method according to claim 1, further comprising determining a predicted vision symptom based on the induced high order aberration.

10. The method according to claim 9, wherein the vision symptom comprises a predicted night vision symptom.

11. The method according to claim 1, further comprising determining a treatment based on the induced high order aberration.

12. The method according to claim 1, further comprising displaying the transformed set of coefficients for the basis function.

13. The method according to claim 1, further comprising displaying the induced high order aberration.

14. 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; and

a fifth module that determines the induced high order aberration based on the transformed set of coefficients.

15. The system according to claim 14, wherein a difference between the first geometrical configuration and the second geometrical configuration comprises a pupil center shift.

16. The method according to claim 14, wherein a difference between the first geometrical configuration and the second geometrical configuration comprises a pupil constriction or a pupil dilation.

17. The method according to claim 14, wherein a difference between the first geometrical configuration and the second geometrical configuration comprises a cyclorotation and a member selected from the group consisting of a pupil center shift, a pupil constriction, and a pupil dilation.

18. 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; and

code for determining the induced high order aberration based on the transformed set of coefficients.

19. The computer program product according to claim 18, further comprising code for determining a treatment based on the induced high order aberration.

20. The computer program product according to claim 18, further comprising code for displaying the transformed set of coefficients for the basis function.