David A Todd

US Patent:

7642990, Jan 5, 2010

Filed:

Jun 15, 2005

Appl. No.:

11/153250

Inventors:

David P. Todd - Wellington FL, US
Bernhard Sabel - Berlin, DE

Assignee:

NovaVision, Inc. - Boca Raton FL

International Classification:

G09G 5/00

US Classification:

345 7, 345 8, 345 55

Abstract:

A head-guide for diagnosing or training vision of a user and methods of user thereof are disclosed. The head-guide may include a head-support for orienting a head of the user, a display-support for orienting a display. The head-guide may also include a guide-support connected to the head-support and the display-support. The head-support and display-support may be pre-configured to fix the relative position of the head and the display and the display may present visual stimuli to diagnose or train the vision of the user.

US Patent:

7748846, Jul 6, 2010

Filed:

Jul 25, 2007

Appl. No.:

11/881140

Inventors:

David P. Todd - Boynton Beach FL, US

Assignee:

NovaVision, Inc. - Boca Raton FL

International Classification:

A61B 3/10
A61B 3/02

US Classification:

351211, 351224

Abstract:

Alteration of a fixation or peripheral stimulus displayed on a computer-driven display allows a human subject to maintain extended visual fixation upon the resulting dynamic stimulus. The fixation is presented upon the display and the stimulus is altered to allow resensitization of the subject's retina, thereby allowing prolonged visual fixation upon the resulting dynamic target. A dynamic stimulus may utilize a frequency doubling illusion.

US Patent:

7753526, Jul 13, 2010

Filed:

Jul 25, 2007

Appl. No.:

11/881142

Inventors:

David P. Todd - Boynton Beach FL, US

Assignee:

NovaVision, Inc. - Boca Raton FL

International Classification:

A61B 3/02
A61B 3/10

US Classification:

351237, 351211, 351224

Abstract:

Alteration of a fixation or peripheral stimulus displayed on a computer-driven display allows a human subject to maintain extended visual fixation upon the resulting dynamic stimulus. The fixation is presented upon the display and the stimulus is altered to allow resensitization of the subject's retina, thereby allowing prolonged visual fixation upon the resulting dynamic target. A dynamic stimulus may utilize a frequency doubling illusion.

US Patent:

8029138, Oct 4, 2011

Filed:

Jul 25, 2007

Appl. No.:

11/881152

Inventors:

David P. Todd - Boynton Beach FL, US

Assignee:

NovaVision, Inc. - Boca Raton FL

International Classification:

A61B 3/02

US Classification:

351222

Abstract:

A method is provided for stimulating a motion-detecting visual pathway of a subject. A subject is tasked with fixating on a central stimulus displayed on a computer-driven display. While the subject is visually fixated, a peripheral stimulus is presented on the display. At least one characteristic of the peripheral stimulus is altered so as to trigger the motion-sensitive visual pathway of the subject. The altered characteristic may be the spatial locus, size, pattern, luminosity or hue of the stimulus. The altered and base stimulus may be alternately displayed in a cyclical manner to sustain the display of a dynamic peripheral stimulus. While alternately displaying the base and altered stimulus, the subject's response, indicative of their detection of the stimulus, may be monitored and recorded. The dynamic peripheral stimulus may be, for example, a repetitively translating object, or a repetitively blinking object.

US Patent:

20070038142, Feb 15, 2007

Filed:

Mar 30, 2006

Appl. No.:

11/394154

Inventors:

David Todd - Boynton Beach FL, US
Bernhard Sabel - Berlin, DE

International Classification:

A61B 13/00

US Classification:

600558000

Abstract:

A head mounted display for diagnosing or training vision of a subject. In one embodiment, the head mounted display includes a first display that presents a first visual image to a first eye of the subject in an identified position of regard with respect to a specified zone in the field of view of the subject. This embodiment may also include a second display that presents a second visual image to a second eye of the subject in an identified position of regard with respect to a specified zone in the field of view of the subject. This embodiment may also include an anterior support section coupled to the first and second displays, the anterior support section orienting the display in front of the eyes of the subject and may also include a posterior support section coupled to the anterior support section.

US Patent:

20080013047, Jan 17, 2008

Filed:

Jun 29, 2007

Appl. No.:

11/771293

Inventors:

David Todd - Boynton Beach FL, US
Sigrid Kenkel - Boca Raton FL, US
Patricia Schulz - Boca Raton FL, US
Dorothee Schlueter - Sulzetal, DE

Assignee:

NOVAVISION, INC. - Boca Raton FL

International Classification:

A61B 3/024
A61H 5/00

US Classification:

351203000, 351224000

Abstract:

A method is provided to map the sight perception of a patient and/or for therapeutically stimulating the patient. The method includes providing a target focal stimulation on a luminous background stimulation field so that the patient may focus upon the target and thereby keep the patient's retina in a fixed position. A temporary peripheral visual stimulation is then created in a region that is peripheral to the fixation target. The peripheral visual stimulation is darker than the background field. A computer records whether the patient was able to see the peripheral stimulation and stores the patient response data in a manner that maintains association with the position of the peripheral visual stimulation. The process is then repeated with additional stimuli and response recordations to create automatically, in computer media, a peripheral vision map. The vision map may be used to allocate a finite number of therapeutic stimuli to an identified visual field region of the patient having high therapeutic potential. The vision map may include a contrast dimension.

US Patent:

49878484, Jan 29, 1991

Filed:

Feb 26, 1990

Appl. No.:

7/462878

Inventors:

David P. Todd - Dania FL

International Classification:

G09F 1700

US Classification:

116173

Abstract:

A dual purpose visual identification and safety flag comprising at least one sheet portion carrying a non-emergency visible identification display and substantially coextensive with the sheet portion, a flexible radar reflecting portion of silver anodized rip-stop nylon.