Indiana University

Other

University of Houston System

University of Texas System

University of Rochester

Advanced Research & Technology Institute

Thibos, Larry N.

Kollbaum, Pete S.

Bradley, Arthur

Larry N Thibos

Raymond A Applegate

Arthur Bradley

Peter S Kollbaum

Pete S Kollbaum

David R Williams

Jose Manuel Gonzalez-Meijome

Tao Liu

Norberto Lopez-Gil

Xin Wei

Methods are disclosed comprising measuring, with a first scanner, a central part of the visual image, measuring, with a second scanner, a peripheral part of the visual image, calculating, by a processor, a pan-retinal measure of image contrast for an extended area of the retina, and optimizing a pan-retinal visual quality. Methods further comprising optimizing a pan-retinal visual quality are also disclosed. Systems are also disclosed comprising either a scanner or a laser, a non-transitory memory having instructions that, in response to an execution by a processor, the processor receives a first measurement of the central part of the visual image, receives a second measurement of the peripheral part of the visual image, and calculates a pan-retinal measure of image contrast for an extended area of the retina. Methods of manufacturing lenses, including contact lenses are disclosed.

Systems and methods for specifying the quality of the retinal image over the entire visual field

This invention describes strategies and devices for improving the visual experience while expanding the depth of field of presbyopic and pseudophakic patients. The invention describes strategies and devices for providing improved image quality and improved visual quality of patients employing simultaneous vision bifocal, trifocal or multifocal corrections or monovision. The invention describes strategies and devices for reducing the visibility of the defocused part of the retinal image generated by simultaneous vision bifocal and multifocal ophthalmic corrections and monovision. The invention describes strategies and devices that employ control of spherical aberration or other similar asphericities to reduce the visibility of defocused ghost images. The invention describes strategies and devices that ensure that negative defocus is always coupled with negative spherical aberration (or similar asphericity), and that positive defocus is always coupled with positive SA (or similar asphericity) as a means to reduce the visibility of defocused ghost images.

Multifocal correction providing improved quality of vision

One exemplary embodiment is a method for determining an ophthalmic prescription. An examination room is lighted to simulate daytime viewing and a conventional eye chart is used as a visual stimulus. A first corrective spherical lens power is determined by varying spherical lens power and identifying when perceived vision is best. The examination room is kept dark to simulate nighttime viewing conditions. The visual stimulus utilized is a white point source on a dark background, or a self illuminated symbol on a dark background. A second corrective spherical lens powered is determined by varying spherical lens power and identifying when perceived vision is best. An ophthalmic prescription such as one or more lenses, one or more surgical corrections or a combinations thereof is provided including a first corrective component including the first preferred spherical lens power, and a second corrective component including the second preferred spherical lens power.

Methods, systems and apparatuses for night and day corrective ophthalmic prescription

This invention describes strategies and devices for improving the visual experience while expanding the depth of field of presbyopic and pseudophakic patients. The invention describes strategies and devices for providing improved image quality and improved visual quality of patients employing simultaneous vision bifocal, trifocal or multifocal corrections or monovision. The invention describes strategies and devices for reducing the visibility of the defocused part of the retinal image generated by simultaneous vision bifocal and multifocal ophthalmic corrections and monovision. The invention describes strategies and devices that employ control of spherical aberration or other similar asphericities to reduce the visibility of defocused ghost images. The invention describes strategies and devices that ensure that negative defocus is always coupled with negative spherical aberration (or similar asphericity), and that positive defocus is always coupled with positive SA (or similar asphericity) as a means to reduce the visibility of defocused ghostimages.

Ophthalmic apparatuses, systems and methods are disclosed. One embodiment is an ophthalmic scanning apparatus including a laser operable to emit a laser beam, a scanning mirror operable to scan the laser beam over at least a +/&#x2212;15 degree scan, and a lens system operable to receive the laser beam from the scanning mirror and direct the laser beam to a spot on an image plane. The spot has a root mean square radius of less than about 3.8 microns over the +/&#x2212;15 degree scan. Further embodiments include methods of modeling and determining corrective prescriptions for patient's eyes. Additional embodiments are described herein.

Opthalmic apparatuses, systems and methods

An method and system for determining the appropriate refractive prescription in a clinical optometry or opthalmology setting. Data in the form of aberrometric input, patient history and other information, and/or other environmental data is used to optimize a real-world prescription for an individual's optic needs through the use of a equivalent quadratic fitting calculation or a simulated through focus experiment.

System and method for optimizing clinical optic prescriptions

Several metrics to predict the subjective impact of the eye's wavefront aberrations are presented. The metrics can be based on RMS wavefront errors or slopes, the area of the critical pupil, a curvature parameter, the point spread function, the optical transfer function, or the like. Other techniques include the fitting of a sphero-cylindrical surface, the use of multivariate metrics, and customization of the metric for patient characteristics such as age.

Metrics to predict subjective impact of eye's wave aberration

Methods, systems, and media relating the display of scattering and/or absorption characteristics of an optical medium. For scattering measurements, a Hartmann-Shack calibration image of a measurement system is acquired to define a first plurality of point spread functions. A Hartmann-Shack test image of the medium is acquired to define a second plurality of point spread functions. A shift is determined between the test image and the calibration image. A point spread of each of the second plurality of point spread functions is measured, each of the second plurality of point spread functions including a component due to optical aberration of the medium and a component due to scatter. The component due to optical aberration is determined using the shift. The component due to optical aberration is deconvolved to determine the component due to scatter. A display of the local scattering characteristics is generated using the component due to scatter. For absorption measurements, a plurality of spot intensity measurements are acquired of a medium, each spot intensity measurement including a component due to reflectivity and a component due to absorption. The component due to reflectivity is determined, and the component due to absorption is determined.

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Bloomington, IN, United States of America

Larry N Thibos