Wavefront measurement pre-smoothing systems and methods

Patent metadata

Field	Value
Publication number	US-10292864-B2
Application number	US-201715426392-A
Country	US
Kind code	B2
Filing date	Feb 7, 2017
Priority date	Dec 31, 2013
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

Embodiments of the present invention encompass systems and methods for generating a vision treatment target for an eye of a patient. Exemplary techniques can involve obtaining a wavefront measurement for the eye of the patient, processing the wavefront measurement, using a low pass filter, to obtain an ocular wavefront, and generating the vision treatment target based on the ocular wavefront. In some cases, the wavefront is processed by applying a Fourier transform to the wavefront measurement to obtain a Fourier spectrum of the wavefront, convolving, in the Fourier domain, the Fourier spectrum of the wavefront and the low pass filter to obtain a Fourier spectrum convolution result, and applying an inverse transform to the convolution result to obtain the ocular wavefront. The ocular wavefront can represent a low pass filtered version of the wavefront measurement, such that high spatial frequency features present in the wavefront measurement are not present in the ocular wavefront.

First claim

What is claimed is:

1. A method of performing a vision treatment on an eye of a patient, comprising:
receiving, by a processor, multiple wavefront measurements for the eye of the patient from a wavefront sensor;
determining, by the processor, an ocular wavefront based on the multiple wavefront measurements, wherein the ocular wavefront represents an averaged version of the multiple wavefront measurements, such that high spatial frequency features present in the multiple wavefront measurements are not present in the ocular wavefront;
calculating, by the processor, a vision treatment target based on the ocular wavefront; and
controlling, by the processor, an eye surgery system to perform the vision treatment according to the vision treatment target.

2. The method according to claim 1 , further comprising processing the treatment target with a deconvolution protocol to obtain a deconvolved treatment target.

3. The method according to claim 2 , wherein the vision treatment target is further calculated based on the deconvolved treatment target.

4. A system for performing a vision treatment on an eye of a patient, comprising:
a memory;
a communication interface that is communicatively coupled to a wavefront sensor and an eye surgery system;
a processor communicatively coupled to the memory and the communication interface;
wherein the processor:
a
receives, using the communication interface, multiple wavefront measurements for the eye of the patient from the wavefront sensor;
determines an ocular wavefront based on the multiple wavefront measurements, wherein the ocular wavefront represents an averaged version of the multiple wavefront measurements, such that high spatial frequency features present in the multiple wavefront measurements are not present in the ocular wavefront;
calculates a vision treatment target based on the ocular wavefront; and
controls, using the communication interface, the eye surgery system to perform the vision treatment according to the vision treatment target.

5. The system according to claim 4 , wherein the processor further:
processes the treatment target with a deconvolution protocol to obtain a deconvolved treatment target.

6. The system according to claim 5 , wherein the vision treatment target is further calculated based on the deconvolved treatment target to the eye of the patient.

7. A non-transitory tangible computer readable storage medium that stores instructions performing a vision treatment on an eye of a patient, wherein the instructions when executed by a processor cause the processor to:
receive, using a communication interface multiple wavefront measurements for the eye of the patient from a wavefront sensor;
determine an ocular wavefront based on the multiple wavefront measurements, wherein the ocular wavefront represents an averaged version of the multiple wavefront measurements, such that high spatial frequency features present in the multiple wavefront measurements are not present in the ocular wavefront;
calculate a vision treatment target based on the ocular wavefront; and
control, using the communication interface, an eye surgery system to perform the vision treatment according to the vision treatment target.

8. The non-transitory tangible computer readable storage medium according to claim 7 , wherein the instructions further cause the processor to:
process the treatment target with a deconvolution protocol to obtain a deconvolved treatment target.

9. The non-transitory tangible computer readable storage medium according to claim 8 , wherein the vision treatment target is further calculated based on the deconvolved treatment target to the eye of the patient.

Assignees

• Amo Dev Llc

Inventors

• Fabrikant Anatoly
• Chernyak Dimitri
• Dai Guang-Ming
• Shah Jayesh

Classifications

• A61F9/00827

  Refractive correction, e.g. lenticle · CPC title

• A61F2009/0087

  Lens · CPC title

• A61F2009/0088

  based on wavefront · CPC title

• A61B3/0025

  characterised by electronic signal processing, e.g. eye models · CPC title

• A61F2009/00872

  Cornea · CPC title