Search Results - david+williams

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Retinal Imaging of Low Light Signals
This technology enables high resolution in vivo images of the retina by a technique of simultaneous image capture and dual registration, which corrects for the natural movement of the living eye to enable many imaging frames to be combined to increase the signal to noise ratio from very weak signals, such as those from fluorescence or phase imaging,...
Published: 6/17/2009   |   Inventor(s): David Williams, Jessica Wolfing Morgan, Daniel Gray, Alfredo Dubra
Keywords(s): in vivo, Ophthalmology, Retinal Imaging
Category(s): Diagnostic
Metrics to Predict the Subjective Impact of the Eye's Wave Aberration
A vision quality metric is an algorithm which interprets the complex wavefront measurements of the aberrations in a human eye in a way which reflects the subjective perception of vision quality. ApplicationsThe vision quality metric is to be used with a wavefront aberrometer to calculate a description of the quality of vision. This metric can serve...
Published: 6/17/2009   |   Inventor(s): David Williams, Raymond Applegate, Larry Thibos
Category(s): Diagnostic
An Objective Method to Determine the Ocular Refraction from Wavefront Aberration Data and to Design an Optimum Customized Correction of a Set of a Few Higher-Order Aberrations
This invention provides a method to compute the correction necessary to correct for abberations in an eye of a patient, using wavefront data. ApplicationsFor the automated determination of an accurate, optimum refraction correction for spectacles or contact lenses, without requiring subjective input from the patient. It enables the use of advanced...
Published: 6/17/2009   |   Inventor(s): David Williams, Antonio Guirao
Category(s): Diagnostic
Rapid, Automatic Measurement of the Eye's Wave Aberration
A process for computing the aberrations of the eye in real time from wavefront measurements using a wavefront sensor such as a Hartmann-Shack detector.ApplicationsReal-time determination of the aberrations of the living human eye is necessary for high resolution imaging of the retina for diagnostic evaluation. This is necessary because the eye is...
Published: 6/17/2009   |   Inventor(s): David Williams, Geunyoung Yoon, Heidi Hofer, Pablo Artal, Juan Aragon, Pedro Prieto, Fernando Vargas, William Vaughn Iii, Benjamin Singer
Category(s): Diagnostic, Optics
Improving Vision and the Resolution of Retinal Images by Measuring and Correcting the Wave Aberration of the Eye
This describes the use of wavefront measurement and adaptive optics to correct all the aberrations of the human eye.ApplicationsWavefront measurement of all the aberrations in the human eye can make possible correction of vision which goes beyond conventional spectacles and contact lenses. This correction of higher order aberrations can be applied...
Published: 6/17/2009   |   Inventor(s): David Williams, Junzhong Liang
Keywords(s): Diagnostic, Ophthalmology
Category(s): Diagnostic