Johnson and Johnson Vision Care, Inc.

The University of Arizona

Russell T Spaulding

Gregory A Williby

John Edward Greivenkamp, Jr

Nelson V Tabirian

James William Haywood

Kyle Heideman

Bruce M Pixton

Rafael Vergara Toloza

Russell J Edwards

Khaled A Chehab

Simon Prince

Susan W Neadle

Robert E Fischer

C Benjamin Wooley

Larry G Jones

Kevin Kearney

Greg Moeller

Douglas G Clark

Paul Hudson

Shawn Mulcahey

John C Hootman

John E Grievenkamp, Jr

Joanne Gosselin

Michael Sherwood

Syed Tariq Shafaat

John Edward Greivenkamp Jr

Nelson V Tabirion

James W Haywood

Jr Greivenkamp

John Edward Greivenkamp

Benjamin C Wooley

The system and methods are made to apply interferometry to ophthalmic applications. The system makes use of a low-coherence interferometer to obtain a plurality of measurements of a contacts lens. The system and methods characterizes the surface profile of both surfaces of a contact lens, a thickness profiles, and combines these measurements with an index information to reconstruct a complete model of the contact lens.

Interferometer having a reference fluid tank with a prism and a motion matching window for characterizing a contact lens

Characterizing the surface of a contact lens with an immersed reference prism

Measuring ophthalmic lens using a prism with phase shifting mirror and a fluid in reference arm

An apparatus and method to improve the prescribing of customized ophthalmic corrections which contain higher order aberration. The apparatus enables the subjective measurement of higher order aberrations such as spherical aberration which can be used as part of the prescription for customized ophthalmic corrections.

Apparatus and method to obtain clinical ophthalmic high order optical aberrations

An ophthalmic lens incorporating clearly identifiable, highly visible embedded labels that are not visible to the wearer or others when placed on the eye may be utilized to allow an individual to easily distinguish between the normal state of the lens and the inverted state of the lens as well as serve any number of functions, including acting as a brand label, a prescription label or as a cosmetic enhancer. The embedded label comprises holographic recordings revealed only in transmitted light.

Contact lenses with embedded labels

An ophthalmic lens incorporating a usage compliance indicator may be utilized to indicate when the lens should be discarded or otherwise treated. The usage compliance indicator comprises a material that is clear when the lens is removed from its packaging and transforms to a visible marking over a given period of time corresponding to the manufacturer's suggested usable time. The material is compatible with the lens material and does not interfere with the optics.

Usage compliance indicator for contact lenses

An ophthalmic lens incorporating clearly identifiable, highly visible inversion marking(s) that become invisible when placed on the eye may be utilized to allow an individual to easily distinguish between the normal state of the lens and the inverted state of the lens. The ophthalmic lens comprises a thin material layer capable of changing its optical state from diffusive light scattering, colored, or both, to invisible transparent at the corneal temperature of a normal person, at the influence of ambient light, or a combination thereof.

Inversion marking for contact lenses

Modified MZ (Mach-Zender) interferometers are utilized to analyze the transmitted, aspherical wavefront of an ophthalmic lens by mounting the lens in a cuvette having a rotatable carousel that can hold multiple lenses. Fresh, temperature controlled, saline solution is circulated about the lenses, and the cuvette is positioned in a vertical test arm of the interferometer configuration. Reverse raytracing is utilized to remove aberrations induced into the wavefront as it is imaged from immediately behind the lens to the detector of the interferometer.

Cuvette for ophthalmic lens

Modified MZ (Mach-Zender) interferometers preferably are utilized to analyze the transmitted, aspherical wavefront of an ophthalmic lens by mounting the lens in a cuvette having a rotatable carousel that can hold multiple lenses. Fresh, temperature controlled, saline solution is circulated about the lenses, and the cuvette is positioned in a vertical test arm of the interferometer configuration. Reverse raytracing preferably is utilized to remove aberrations induced into the wavefront as it is imaged from immediately behind the lens to the detector of the interferometer.

Interferometry testing of lenses, and systems and devices for same

The invention provides methods for designing contact lenses that provides improved efficiency in lens design compared to conventional methods. It is a discovery of the invention that improved performance and reduced design time can be obtained by utilizing a visual performance prediction model as a part of the design process.

Method of designing multifocal contact lenses

The invention provides a method for designing tinted contact lenses that permits the computer-assisted modeling of a tinted lens on-eye. The method of the invention provides a substantially accurate prediction as to the appearance of the lens on-eye and reduces the number of designs that must be clinically tested and the number of iterations that each design must go through.

Methods for designing tinted contact lenses

Growing community of inventors

St. Johns, FL, United States of America

Russell T Spaulding