Other

Ophthonix, Inc.

Essilor International (compagnie Generale D'optique)

Essilor International (compagnie General D'optique)

Novatec Laser Systems, Inc.

Opthonix, Inc.

Novatic Laser Systems, Inc.

Essilor International

Shui T Lai

Andreas Wilhelm Dreher

Laurence Warden

Jagdish M Jethmalani

Donald Bruns

Gary Mills

William G Foote

David G Sandler

John Ferro

Ming Lai

Lawrence H Sverdrup

Keith Dillon

Larry H Sverdrup

Gomaa Abdel-Sadek

Casimir Andrew Swinger

Larry Sverdrup

A wavefront device produces adjustable amplitudes in optical path differences and adjustable axis orientation angles. two substantially identical wave plates have a wavefront profile of at least the third order Zernike polynomial function which are not circularly symmetric, as denoted by Z(i,j) where i&#x2265;3 and j&#x2260;0. The wave plates are mounted in rotatable mounts with their optical centers substantially aligned with each other. An subjective wavefront refraction instrument and method are provided to correct low and high order aberrations of the eye, using the adjustable wave plates that have astigmatism and higher order Zernike function optical path difference wavefront profiles.

Subjective wavefront refraction using continuously adjustable wave plates of Zernike function

A concise representation illustrating essential elements of a subjective refraction eye test that includes choices of optics offered to a test subject, responses by the test subject indicating respective choices among the optics, and time durations of, between, or both of and between, responses by the test subject indicating the respective choices of optics. The concise representation includes a presentation that illustrates the essential elements of the eye test.

Concise representation for review of a subjective refraction test

A method of correcting wavefront aberrations of an eye includes determining a high precision conventional intrastromal corneal ablation profile based on a direct removal of the intrastromal corneal tissue. An expanded ablation volume profile is constructed based on the direct tissue removal profile and the expanded tissue volume is to be ablated instead to correct to the wavefront aberrations. The thickness of the ablated profile of a conventional ablation profile is expanded by an expansion factor (Nc&#x2212;1)/(Nm&#x2212;Nc), Nc is the index of refraction of the cornea and Nm the index of fill material. An expanded ablation volume filled with the fill material produces the effect of correcting wavefront aberrations as if a much smaller tissue volume were ablated without the fill material.

Intrastromal surgery correcting low order and high order aberrations of the eye

A viewing target for a visual acuity and refraction measurement includes at least one line comprising a width dimension that is below a resolution limit width (hereinafter 'RLW') of a test subject visual acuity, and an adjustable length dimension that is initially set at greater than the RLW of the test subject visual acuity. A base, at least approximately intersecting the line, has a thickness along the direction of the length of the line that is greater than the RLW of the test subject visual acuity. The length dimension of the line is adjustable in increments small enough to effectively approximate the visual acuity of the test subject by determining a shortest resolvable line and a next smaller line that is not resolvable by the test subject.

Effective acuity and refraction targets

A refraction device determines a refraction end point to provide corrective optics for a test subject. The device includes an adjustable optical system providing corrective optics to the test subject and an adjustable viewing target disposed along an optical path such as to be viewable through the adjustable optical system by a test subject. The adjustable viewing target includes a directional indicator linked synchronously to at least two choices of corrective optics presented to the test subject.

Self guided subjective refraction instruments and methods

A wavefront device produces adjustable amplitudes in optical path differences and adjustable axis orientation angles. two substantially identical wave plates have a wavefront profile of at least the third order Zernike polynomial function which are not circularly symmetric, as denoted by Z(i,j) where i&#x2267;3 and j&#x2260;0. The wave plates are mounted in rotatable mounts with their optical centers substantially aligned with each other. An subjective wavefront refraction instrument and method are provided to correct low and high order aberrations of the eye, using the adjustable wave plates that have astigmatism and higher order Zernike function optical path difference wavefront profiles.

Subjective wavefront refraction using continuously adjustable wave plates of zernike function

An optical wavefront correction plate incorporates a unique, three-dimensional spatial retardation distribution utilizing the index of refraction change of resin mixture in its cured state. The optical wave plate comprises a pair of transparent plates, containing a layer of a monomers and polymerization initiators, such as resin mixture. This resin mixture exhibits a variable index of refraction as a function of the extent of its curing. Curing of the resin mixture may be made by exposure to light, such as ultraviolet light, and may be varied across and through the surface of the resin mixture to create a particular and unique three-dimensional wavefront retardation profile. The optical wave plate provides improved performance in large area mirrors, lenses, telescopes, microscopes, and ophthalmic diagnostic systems.

Apparatus and method of fabricating a compensating element for wavefront correction using spatially localized curing of resin mixtures

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Encinitas, CA, United States of America

Shui T Lai