Youssef Dr Wakil

6409345, Jun 25, 2002

Aug 8, 2000

09/634487

Vasyl V. Molebny - Kiev, UA
Ioannis Pallikaris - Heraklion Crete, GR
Youssef Wakil - Houston TX
Sergiy Molebny - Kiev, UA

Tracey Technologies, LLC - Houston TX

A61B 310

351212

An instrument for measuring aberration refraction of an eye is provided, having: a lens system defining an instrument optical axis and an alignment device for aligning the visual axis of the eye with the instrument optical axis. A light source produces a probing beam that is projected through the lens system parallel to the instrument optical axis and is selectably positionable partially off-set from the instrument optical axis for entering the eye parallel to the instrument optical axis at a plurality of locations on the cornea of the eye. A first photodetector measures the position of a first portion of the probing beam light scattered back from the retina of the eye to measure aberration refraction of the eye at a plurality of locations. A second photodetector synchronously measures the position of a second portion of the probing beam light reflected back from the cornea of the eye.

6450641, Sep 17, 2002

Apr 9, 2001

09/828148

Henry M. DSouza - Cypress TX
Edwin J. Sarver - Merritt Island FL
Youssef S. Wakil - Houston TX

LaserSight Technologies, Inc. - Winter Park FL

A61B 310

351212

A method for analysis of the curvature of the surface of a cornea using a checkered placido comprises, projecting the image of the checkered placido onto a patients cornea, detecting the image of the checkered placido reflected off of the cornea, detecting a plurality of nodal points from the reflected image, determining the mean curvature at a plurality of nodal points and analyzing the mean curvature at a plurality of nodal points in order to produce a graphic display of the estimated actual curvature of the cornea.

6932475, Aug 23, 2005

May 1, 2002

10/137720

Vasyl V. Molebny - Kiev, UA
Ioannis Pallikaris - Heraklion Crete, GR
Igor Chyzh - Kiev, UA
Vyacheslav Sokurenko - Kiev, UA
Leonidas Naoumidis - Heraklion Crete, GR
Youssef Wakil - Houston TX, US

Tracey Technologies, L.L.C. - Houston TX

A61B003/10

351215

An instrument for measuring aberration refraction of an eye is provided, having: a lens system defining an instrument optical axis and an alignment device for aligning the visual axis of the eye with the instrument optical axis. A light source () produces a probing beam that is projected through the lens system parallel to the instrument optical axis and is selectably positionable partially off-set from the instrument optical axis for entering the eye () parallel to the instrument optical axis at a plurality of locations on the cornea of the eye. A photodetector () measures the position of probing beam light scattered back from the retina of the eye to measure aberration refraction of the eye at a plurality of locations.

7303281, Dec 4, 2007

Nov 14, 2003

10/714454

Youssef S. Wakil - Houston TX, US
Vasyl Molebny - Kiev, UA
Ioannis G. Pallikaris - Heraklion Crete, GR
Sergiy Molebny - Houston TX, US
Tom Padrick - Seattle WA, US

Tracey Technologies, LLC - Houston TX

A61B 3/10

351246, 351205, 351212, 351221

A method and an instrument is provided for measuring aberration refraction of an eye with a first device for measuring the total aberration refraction of the eye and a second device for measuring the aberration refraction of the cornea of the eye. The component of aberration refraction caused by the lens caused by the lens is calculated using the measured total eye aberration refraction and the measured component of aberration refraction of the cornea mapped over the optical surfaces of the eye. Each component portion of the aberration refraction provides information usable for making appropriate corrective actions at the cornea, at the lens, or both as indicated by the mapped measurements and calculations.

7311400, Dec 25, 2007

Apr 16, 2002

10/475153

Youssef Wakil - Houston TX, US
Vasyl V. Molebny - Kiev, UA
Sergiy Molebny - Houston TX, US
Ioannis Pallikaris - Crete, GR

Tracey Technologies, LLC - Houston TX

A61B 3/10

351205, 351222, 351246

Eye refraction is measured to achieve desired quality via a selected vision characteristics. A characteristic of vision is selected to correlate to the desired quality of vision from a group of vision characteristics comprising acuity, Strehl ratio, contrast sensitivity, night vision, day vision, and depth of focus, dynamic refraction over a period of time during focus accommodation, and dynamic refraction over a period of time during pupil constriction and dilation. Wavefront aberration measurements are used to objectively measure the state of the eye refraction that defines the desired vision characteristic. The measured state of refraction is expressed with a mathematical function enabling correction of the pre-selected vision characteristic to achieve the desired quality of vision. The mathematical expression function may be a Zernike polynomial having both second order and higher order terms or a function determined by spline mathematical calculations. Pre-selected vision characteristics may be determined using ray tracing technology.

7370964, May 13, 2008

Jul 29, 2002

10/485323

Youssef Wakil - Houston TX, US
Ioannis Pallikaris - Crete, GR
Vasyl Molebny - Kiev, UA

Tracey Technologies, LLC - Houston TX

A61B 3/00
A61B 3/10

351205, 351203

An apparatus and method for measuring refractive characteristics of human eyes with an objective refraction measuring device for measuring refraction in at least one eye, the objective refraction measuring system having a proximal end and a distal end, the objective refraction measuring system suitable for looking in the proximal end and seeing out the distal end; an open field visual target. An open viewing lane is provided between the eye and the open field visual target, the viewing lane has sufficient length to allow for focusing the eye at infinity and for natural accommodation at true distance targets, such near distances such as reading distances. The objective refraction measuring device can be positioned in the viewing lane to measure the eye while the eye is focused on the open field visual target.

RE42782, Oct 4, 2011

Jun 23, 2004

10/876200

Vasyl Molebny - Kiev, UA
Ioannis Pallikaris - Crete, GR
Youssef Wakil - Houston TX, US
Sergiy Molebny - Houston TX, US

Tracey Technologies, LLC - Houston TX

A61B 3/10

351212

An instrument for measuring aberration refraction of an eye is provided, having: a lens system defining an instrument optical axis and an alignment device for aligning the visual axis of the eye with the instrument optical axis. A light source produces a probing beam that is projected through the lens system parallel to the instrument optical axis and is selectably positionable partially off-set from the instrument optical axis for entering the eye parallel to the instrument optical axis at a plurality of locations on the cornea of the eye. A first photodetector measures the position of a first portion of the probing beam light scattered back from the retina of the eye to measure aberration refraction of the eye at a plurality of locations. A second photodetector synchronously measures the position of a second portion of the probing beam light reflected back from the cornea of the eye.

20130018276, Jan 17, 2013

Oct 17, 2011

13/317418

Roberto Zaldivar - Emilio Citit, AR
Roger Zaldivar - Emilio Citit, AR
Youssef S. Wakil - Houston TX, US

A61B 5/107

600558

Provided herein is a measurement tool for implantable non-spherical asymmetric optics comprising a viewable, rotatable angular caliper superimposable over an image of an eye. Also provided are methods for optimally placing non-spherical asymmetric optics in an eye of a patient and for correcting post-operative astigmatism in a patient having cataract surgery. The measurement tool is useful to plan the optimal correct surgical placement of a non-spherical asymmetric optic, e.g., a toric intraocular implant or a toric intraocular contact lens, in the eye. By superimposing the measurement tool over a corneal topographic image, an optimal positioning of the non-spherical asymmetric optic can be effected in an optical zone of interest. Correct placement or re-placement at least minimizes astigmatism in post-operative vision. Also provided are computer program products and computer readable media comprising modules and methods for data entry, lens selection and surgical planning utilized to practice the methods provided herein.