Patent ID: 7931371

Claim:
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.