PORTABLE VIDEO OCULOGRAPHY SYSTEM WITH INTEGRAL CALIBRATION LIGHT

• US 20070132841A1
• Filed: 10/13/2006
• Published: 06/14/2007
• Est. Priority Date: 11/07/2003
• Status: Active Grant

• Current Assignee: Spryson Incorporated
• Original Assignee: Neuro Kinetics, Inc. (Neurolign Technologies, Inc.)
• Inventors: Joos, Thomas, Moore, Steven, Schroeder, John, Wuyts, Floris, Kiderman, Alexander, MacDougall, Hamish
• Granted Patent: US 7,753,523 B2
• Time in Patent Office: Days
• US Class Current: 348/78
• CPC Class Codes: A61B 3/113 for determining or recording eye movement

Abstract

A goggle based light-weight VOG system includes an integral calibration laser and at least one digital camera connected to and powered by a laptop computer through a firewire connection. The digital camera may digitally center the pupil in both the X and Y directions. A calibration mechanism may be incorporated onto the goggle base. An EOG system may also be incorporated directly into the goggle. The VOG system may track and record 3-D movement of the eye, track pupil dilation, head position and goggle slippage. An animated eye display provides data in a more meaningful fashion. The VOG system is a modular design whereby the same goggle frame or base is used to build a variety of digital camera VOG systems.

Claims

1. A video oculography system comprising:

a light-weight head mounted base adapted to be attached to a patient'"'"'s head;

at least one digital camera attached to the base; and

a light source attached to the base, wherein the light source is visible to the clinician while the patient is wearing the head mounted base.

2. The system of claim 1 further including a power, control and data coupling extending to each digital camera and the light source for transmitting power and control signals to each digital camera and the light source and receiving data there from;

a controller coupled to the power, control and data coupling, the controller providing power and control signals to each digital camera and the light source and receiving and storing data signals there from, the contoller including a display wherein the display will display the data of each digital camera including an animated eye image of the patients'"'"' eye.

3. The system of claim 1 further including a plurality of sensors mounted on the base, wherein the sensors provide electro-oculography data to the controller, and wherein the base is a goggles having a face engaging skirt and the sensors providing the electro-oculography data are mounted in the skirt.

4. The system of claim 2 wherein the controller is used to digitally center the eye position of the patient during operation in at least two directions.

5. The system of claim 4 further including a z-axis camera lens position adjustment mechanism positioned on the base and accessible while the base is worn by the patient.

6. The system of claim 1 further including a plurality of digital cameras adapted to be selectively, removably mounted to the base.

7. The system of claim 1 further including a plurality of caps that can be selectively, removably mounted on the goggles.

8. The system of claim 1 further including head tracking sensor mounted to the base.

10. A video oculography system comprising:

a light-weight head mounted base adapted to be attached to a patient'"'"'s head;

at least one camera attached to the base;

a controller coupled to the at least one camera, the controller providing power and control signals to each camera and receiving and storing data signals there from; and

a laser attached to the base, wherein the laser is visible to the clinician while the patient is wearing the head mounted base.

11. The system of claim 10 wherein the laser is directed away from the base and is configured to be utilized to calibrate the system.

12. The system of claim 11 wherein the base is a pair of light weight goggles.

13. The system of claim 12 wherein the goggles form an occluded environment for the camera.

14. The system of claim 13 wherein the controller is a laptop computer.

15. The system of claim 14 wherein the cameras are digital cameras.

16. The system of claim 15 further including an array of light elements on the goggle base directed at the patients eye.

17. The system of claim 16 wherein the array of light elements includes a plurality of infrared light elements and a plurality of visible light elements facing the patient.

18. The system of claim 16 wherein the array of light elements is an annular array and includes at least a pair of infrared LED elements and at least a pair of visible light LED elements facing the patient.

19. A modular video oculography system comprising:

a light-weight head mounted goggle base adapted to be attached to a patient'"'"'s head;

at least one camera selectively attached to the base forming an occluded environment around a patients eye and configured to operate in the occluded environment;

a controller coupled to the at least one camera, the controller providing power and control signals to each camera and receiving and storing data signals there from; and

a laser attached to the base, wherein the laser is directed away from the patient to be visible to the clinician while the patient is wearing the head mounted base.

20. The system of claim 19 further including an array of light elements on the goggle base directed at the patients eye.