Systems and methods for wavefront reconstruction for aperture with arbitrary shape
View Patent ↗Systems, methods, and devices for determining an aberration in an optical tissue system of an eye are provided. Techniques include inputting optical data from the optical tissue system of the eye, where the optical data includes set of local gradients corresponding to a non-circular shaped aperture, processing the optical data with an iterative Fourier transform to obtain a set of Fourier coefficients, converting the set of Fourier coefficients to a set of modified Zernike coefficients that are orthogonal over the non-circular shaped aperture, and determining the aberration in the optical tissue system of the eye based on the set of modified Zernike coefficients.
1. A system for determining an aberration in an optical tissue system of an eye, the system comprising:
a light source for transmitting an image through the optical tissue system;
a sensor oriented for determining a set of local gradients for the optical tissue system by detecting the transmitted image, the set of local gradients corresponding to a non circular shaped aperture;
a processor coupled with the sensor; and
a memory coupled with the processor, the memory configured to store a plurality of code modules for execution by the processor, the plurality of code modules comprising:
a module for inputting optical data from the optical tissue system of the eye, the optical data comprising the set of local gradients;
a module for processing the optical data with an iterative Fourier transform to obtain a set of Fourier coefficients;
a module for converting the set of Fourier coefficients to a set of modified Zernike coefficients that are orthogonal over the non-circular shaped aperture; and
a module for determining the aberration in the optical tissue system of the eye based on the set of modified Zernike coefficients.
2. The system of claim 1 , further comprising a module for establishing a prescription shape for the eye based on the aberration.
3. The system of claim 1 , wherein the non-circular shaped aperture comprises a hexagonal aperture.
4. The system of claim 1 , wherein the non-circular shaped aperture comprises an elliptical aperture.
5. The system of claim 1 , wherein the non-circular shaped aperture comprises an annular aperture.
6. The system of claim 1 , wherein the optical data comprises Hartmann-Shack wavefront sensor data.
7. The system of claim 1 , wherein the module for converting the set of Fourier coefficients to a set of modified Zernike coefficients comprises a Gram-Schmidt orthogonalization module.
8. A system for determining an optical surface model for an optical tissue system of an eye, the system comprising:
a light source for transmitting an image through the optical tissue system;
a sensor oriented for determining a set of local gradients for the optical tissue system by detecting the transmitted image, the set of local gradients corresponding to a non-circular shaped aperture;
a processor coupled with the sensor; and
a memory coupled with the processor, the memory configured to store a plurality of code modules for execution by the processor, the plurality of code modules comprising:
a module for inputting optical data from the optical tissue system of the eye, the optical data comprising the set of local gradients;
a module for processing the optical data with an iterative Fourier transform to obtain a set of Fourier coefficients;
a module for converting the set of Fourier coefficients to a set of modified Zernike coefficients that are orthogonal over the non-circular shaped aperture;
a module for deriving a reconstructed surface based on the set of modified Zernike coefficients; and
a module for determining the optical surface model based on the reconstructed surface.
9. The system of claim 8 , further comprising a module for establishing a prescription shape for the eye based on the optical surface model.
10. The system of claim 8 , wherein the non-circular shaped aperture comprises a hexagonal aperture.
11. The system of claim 8 , wherein the non-circular shaped aperture comprises an elliptical aperture.
12. The system of claim 8 , wherein the non-circular shaped aperture comprises an annular aperture.
13. The system of claim 8 , wherein the optical data comprises Hartmann-Shack wavefront sensor data.
14. The system of claim 8 , wherein the module for converting the set of Fourier coefficients to a set of modified Zernike coefficients comprises a Gram-Schmidt orthogonalization module.
15. A computer program product for determining an aberration in an optical tissue system of an eye, the computer program product comprising:
code for accepting optical data corresponding to the optical tissue system of the eye, the optical data comprising a set of local gradients corresponding to a non-circular shaped aperture; and
code for processing the optical data with an iterative Fourier transform to obtain a set of Fourier coefficients;
code for converting the set of Fourier coefficients to a set of modified Zernike coefficients that are orthogonal over the non-circular shaped aperture;
code for determining the aberration in the optical tissue system of the eye based on the set of modified Zernike coefficients; and
a computer-readable medium that stores the codes.
16. The computer program product of claim 15 , further comprising code for establishing a prescription shape for the eye based on the optical surface model.
17. The computer program product of claim 15 , wherein the non-circular shaped aperture comprises a hexagonal aperture.
18. The computer program product of claim 15 , wherein the non-circular shaped aperture comprises an elliptical aperture.
19. The computer program product of claim 15 , wherein the non-circular shaped aperture comprises an annular aperture.
20. The computer program product of claim 15 , wherein the optical data comprises Hartmann-Shack wavefront sensor data.