초록 ▼

A system and method for converting measured wavefront data into an ablation profile for correcting visual defects includes providing measured wavefront data on an aberrated eye by a method such as known in the art. The measured wavefront data are correlated with accumulated data on previously treate

A system and method for converting measured wavefront data into an ablation profile for correcting visual defects includes providing measured wavefront data on an aberrated eye by a method such as known in the art. The measured wavefront data are correlated with accumulated data on previously treated eyes. Next an adjustment is applied to the measured wavefront data based upon the correlating step. This adjustment is used to form adjusted wavefront data for input to a wavefront data correction algorithm to calculate an ablation profile therefrom. The wavefront data correction algorithm may be modeled as, for example, Zernike polynomials with adjusted coefficients.

대표청구항 ▼

That which is claimed is: 1. A method for converting measured wavefront data into an ablation profile for correcting visual defects, the method comprising the steps of: providing measured wavefront data on an aberrated eye of a first patient; correlating the measured wavefront data with accumulated

That which is claimed is: 1. A method for converting measured wavefront data into an ablation profile for correcting visual defects, the method comprising the steps of: providing measured wavefront data on an aberrated eye of a first patient; correlating the measured wavefront data with accumulated data on previously treated eyes of a plurality of patients; and applying an adjustment to the measured wavefront data based upon the correlating step to form adjusted wavefront data for input to a wavefront data correction algorithm to calculate a corneal ablation profile therefrom. 2. The method recited in claim 1, wherein the wavefront data providing step comprises analyzing a wavefront emanating from the eye and determining an optical path difference between a reference wave and the wavefront. 3. The method recited in claim 1, further comprising the steps, prior to the correlating step, of: storing in a database measured pre-operative wavefront data on a plurality of aberrated eyes; storing in the database measured post-operative wavefront data on the plurality of aberrated eyes following corneal ablation corrective treatment; and wherein: the correlating step comprises accessing accumulated data from the database. 4. The method recited in claim 3, further comprising the steps, prior to the storing steps, of measuring pre-operative and post-operative wavefront data. 5. The method recited in claim 1, further comprising the step of modeling the measured wavefront data as a polynomial comprising a plurality of coefficients, and wherein the correlating step comprises correlating each coefficient with a respective coefficient of the accumulated data, the accumulated data comprising polynomials, each comprising a plurality of coefficients. 6. The method recited in claim 5, wherein the polynomial comprises a Zernike polynomial. 7. The method recited in claim 1, wherein the wavefront correction algorithm is adapted for correcting an eye characterized by at least one of myopia, hyperopia, and being dominated by higher-order aberrations. 8. The method recited in claim 1, wherein the adjustment is substantially site-independent. 9. The method recited in claim 1, wherein the adjustment is site-dependent. 10. A method for converting measured wavefront data into an ablation profile for correcting visual defects, the method comprising the steps of: providing measured wavefront data on an aberrated eye; measuring pre-operative wavefront data over a first radius and measuring post-operative wavefront data over a second radius smaller than the first radius; storing in a database measured pre-operative wavefront data on a plurality of aberrated eyes; storing in the database measured post-operative wavefront data on the plurality of aberrated eyes following corneal ablation corrective treatment; accessing accumulated data from the database; correlating the measured wavefront data with accumulated data on previously treated eyes; and applying an adjustment to the measured wavefront data based upon the correlating step to form adjusted wavefront data for input to a wavefront data correction algorithm to calculate a corneal ablation profile therefrom. 11. The method recited in claim 10, further comprising the step, following the measuring steps, of scaling one of the pre-operative data and the post-operative data to achieve a size match with the other of the pre-operative data and the post-operative data. 12. A method of performing a refractive correction on a cornea of an eye, the method comprising the steps of: providing measured wavefront data on an aberrated eye of a first patient; correlating the measured wavefront data with accumulated data on previously treated eyes of a plurality of patients; applying an adjustment to the measured wavefront data based upon the correlating step to form adjusted wavefront data for input to a wavefront data correction algorithm to calculate a corneal ablation profile therefrom; directing a laser beam onto the first patient eye for ablating the cornea; and moving the laser beam in a pattern about the first patient eye, the pattern based on the corneal ablation profile. 13. A system for converting measured wavefront data into an ablation profile for correcting visual defects comprising: a processor; and software resident on the processor having code segments adapted to: correlate measured wavefront data on an eye of a first patient with accumulated data on a plurality of previously treated eyes; and apply an adjustment to the measured wavefront data based upon the correlating step to form adjusted wavefront data for input to a wavefront data correction algorithm to calculate a corneal ablation profile therefrom for application to the first patient eye. 14. The system recited in claim 13, wherein the software further has a code segment adapted to apply the wavefront data correction algorithm. 15. The system recited in claim 13, wherein the software further has a code segment adapted to determine an optical path difference between a reference wave and the wavefront. 16. The system recited in claim 13, wherein the measured wavefront data comprise pre-operative wavefront data measured over a first radius and post-operative wavefront data measured over a second radius smaller than the first radius, the pre-operative wavefront data and the post-operative wavefront data scaled to achieve a size match therebetween. 17. The system recited in claim 13, wherein the software further has a code segment adapted to model the measured wavefront data as a polynomial comprising a plurality of coefficients, and wherein the correlation comprises correlating each coefficient with at least one coefficient of the accumulated data, the accumulated data comprising polynomials, each comprising a plurality of coefficients. 18. The system recited in claim 17, wherein the polynomial comprises a Zernike polynomial. 19. The system recited in claim 13, wherein the wavefront data correction algorithm is adapted for correcting an eye characterized by at least one of myopia, hyperopia, and being dominated by higher-order aberrations. 20. The system recited in claim 13, wherein the adjustment is substantially site-independent. 21. The system recited in claim 13, wherein the adjustment is site-dependent.