Cynthia Bailey Roberts

US Patent:

7866820, Jan 11, 2011

Filed:

Jul 30, 2007

Appl. No.:

11/830372

Inventors:

Edwin J. Sarver - Carbondale IL, US
James Marous - South Vienna OH, US
Cynthia Roberts - Columbus OH, US

Assignee:

Vision Optimization, LLC - Columbus OH

International Classification:

A61B 3/10

US Classification:

351212, 351205

Abstract:

An advanced rasterstereography-based corneo-scleral topography (RCT) device includes an LED-based grid projection/illumination assembly, a grid image viewing assembly, and an optionally integratable front view camera assembly. The assemblies each include telephoto optical systems that provide a compact structure, an increased depth of field, and an increased field of view that allow sufficient acquisition of data in a single acquired image to provide the desired corneo-scleral topography analysis. The device utilizes a novel image processing algorithm. The device and method provide the capability to map a feature from a raw grid image onto a topography map of the corneo-scleral region, and to simultaneously display the images if selected by the user. The hardware, software, mechanical, electrical, and optical design considerations and integration provide advantages and benefits over prior RCT-type, Placido-based, and other conventional corneal topographers.

US Patent:

8172900, May 8, 2012

Filed:

Sep 21, 2005

Appl. No.:

11/663362

Inventors:

Cynthia J. Roberts - Columbus OH, US
Grant A. McCallum - Cleveland Heights OH, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

A61F 2/16

US Classification:

623 622, 623 611, 623 41, 606107, 600407, 600409

Abstract:

A sensing system and method to detect and determine magnitude and direction of ciliary body movement within an eye of a patient is disclosed. The invention comprises a permanent magnet (PM) positioned in the ciliary body, and a sensing device (SD) positioned adjacent the ciliary body and configured to detect displacement of the permanent magnet relative to the sensing device via movement of the ciliary body. The invention also comprises a data processing device (DPD) configured to determine magnitude and direction of the ciliary body movement based on the displacement of the permanent magnet detected by the sensing device.

US Patent:

8226235, Jul 24, 2012

Filed:

Mar 4, 2010

Appl. No.:

12/717159

Inventors:

Cynthia J. Roberts - Columbus OH, US
James Richard Marous - South Vienna OH, US
Ashraf Mostafa Mahmoud - New Albany OH, US

Assignee:

Vision Optimization, LLC - Columbus OH

International Classification:

A61B 3/10
A61B 3/16

US Classification:

351212, 351210, 600405, 702 42

Abstract:

Apparatus and methods for measuring a dynamic deformation characteristic of a deformable target surface during a deformation interval. The measurement principles may be applied to a large variety of organic and inorganic materials having a surface that can be deformed by an applied non-contact force. The surface may be light diffusing and non-transparent or non-diffusing and transparent. A device for measuring a dynamic deformation characteristic of an in-vivo cornea during a deformation interval includes a corneal topographer and an air puff generator that are operationally integrated. Use of the inventive device enables a method for making a measurement of a deformation characteristic of the in-vivo cornea during a deformation interval, further allowing a determination of spatially-resolved in-vivo corneal biomechanical and biodynamic properties such as corneal elasticity and corneal viscosity.

US Patent:

8414565, Apr 9, 2013

Filed:

Dec 16, 2003

Appl. No.:

10/539181

Inventors:

Cynthia L. Roberts - Columbus OH, US
Ashraf Mahmoud - Worthington OH, US
Edward E Herderick - Pinkerington OH, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

A61B 18/20

US Classification:

606 5, 128898, 351212

Abstract:

Example systems and methods for performing individually customized corneal ablative surgery is presented. The example systems and methods rely on a parametric model that correlates corneal measurements with predicted post-operative results and algorithm updates that facilitate achieving desired post-operative results.

US Patent:

7992569, Aug 9, 2011

Filed:

Oct 15, 2003

Appl. No.:

10/531345

Inventors:

Cynthia Roberts - Columbus OH, US
Ashraf Mahmoud - New Albany OH, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

A61B 19/00
A61B 18/18

US Classification:

128898, 606 5

Abstract:

The present invention discloses a corneal refractive procedure providing a customized transition zone. The customized transition zone provided according to the methods and systems of the present invention exhibits continuous curvature between an ablated optical zone and a non-ablated zone to address curvature discontinuity at the edge of the optical zone, thereby minimizing the biomechanical response and its postoperative effects on vision.

US Patent:

20030208190, Nov 6, 2003

Filed:

Jan 14, 2003

Appl. No.:

10/332891

Inventors:

Cynthia Roberts - Columbus OH, US
William Dupps - Iowa City IA, US
Noriko Katsube - Columbus OH, US

International Classification:

A61B018/20

US Classification:

606/005000

Abstract:

Biomechanical responses of the eye are used to improve photorefractive procedures. LASIK or PRK treatments, for example, can be improved by taking pre-operative measurement and predicting the corneas's biodynamic response to the ablative treatment. Predicitve use is mad of the biodynamic response of the cornea due to laser or mechanical keratectomy, that is, creating a corneal flap characterisitc of LASIK. Comparison of pre-flap and post-flap, (pre-ablation) data of the cornea such as corneal thickness, flap thickness, corneal topography and wavefront, for example, can provide predictive information applicable to modifying an ablation alorithm before the laser is engaged, either for a current operation or the development of a model. Modeling, by finite element analysis or other mathematical techniques, can also be used to predict post-operative outcomes based on a pre-operative (no flap cut or other surgical intervention) data for the cornea that is input for an accurate eye model that, in consideration of biodynamic response via the model, provides predictive information for optimizing the sucess of the refractive surgery and ultimately patient satisfaction.

US Patent:

20070106376, May 10, 2007

Filed:

Oct 6, 2004

Appl. No.:

10/572084

Inventors:

Cynthia Roberts - Columbus OH, US
Edwin Sarver - Carbondale IL, US
James Marous - South Vienna OH, US

International Classification:

A61F 2/14
A61F 9/013

US Classification:

623004100, 623005120, 623906000, 351246000

Abstract:

A method and apparatus related to enhancing corneal accommodation to address the effect of presbyopia. Corneal/scleral topology measurements in accommodating and non-accommodating states are indicative of a presbyopic subject's nominal corneal accommodative power. A desired accommodative power intended to improve on the effect of presbyopia can be determined, suggesting a selective biomechanical intervention in the corneal structure outside of the optical zone to create flexure regions. These flexure regions would allow enhanced corneal accommodation upon presentation of an accommodating stimulus. Intervention could be in the form of, for example, corneal surface ablation, intrastromal ablation, conductive keratoplasty (CK), laser thermal keratoplasty (LTK), and corneal and/or scleral implants. An improved topology measuring apparatus having an improved field of view and other attributes is disclosed.

US Patent:

20070195268, Aug 23, 2007

Filed:

Feb 14, 2007

Appl. No.:

11/674985

Inventors:

Edwin Sarver - Carbondale IL, US
James Marous - South Vienna OH, US
Cynthia Roberts - Columbus OH, US

International Classification:

A61B 3/10

US Classification:

351212000

Abstract:

The purpose of this invention is to provide a corneal topography system for use by eye car professionals to diagnose and correct vision defects; particularly, to an advanced corneal topography system which accurately assess the shape of the human cornea utilizing a projected grid and current digital camera technology.

Address:

814 Carpenter St, Columbus, OH 43206

VIN:

KNDJT2A22A7138056

Make:

KIA

Model:

SOUL

Year:

2010

Address:

4736 Cherry Park Dr, Columbus, OH 43230

VIN:

2T1BR32E97C726660

Make:

TOYOTA

Model:

COROLLA 4DR SDN MANUAL C

Year:

2007