Cynthia E 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:

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.