Binocular vision assessment and/or therapy
AssigneeMcGill University
InventorsRobert F. Hess, Behzad Mansouri, Benjamin Simon Thompson
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Abstract
An information difference between a left eye image and a right eye image is adjustable to achieve binocular vision in a patient having a deficiency of binocular vision. A source of image pairs is used along with a dichoptic display system to present a selected one of the image pairs as a right eye image to a patient's right eye and a left eye image to a patient's left eye. The difference at which a patients achieves binocular vision is a measure of a level binocular vision health or function, and continued exposure to the image pairs is therapeutic. The difference can be adjusted during therapy, and restoration of regular binocular vision is possible.
Claims20
A binocular vision assessment and/or therapy apparatus comprising:
- a source of left eye image and right eye image pairs adapted to be viewed dichoptically, said pairs having a variable difference between said left eye image and said right eye image;
- and
- a dichoptic display system presenting a selected one of said images pairs as a right eye image to a patient's right eye and a left eye image to a patient's left eye, wherein said variable difference is adjustable to achieve binocular vision in a patient having a deficiency of binocular vision;
- wherein one image of said image pairs is information rich and another image of said image pairs is information poor.
A method of assessing a level of binocular vision comprising:
- (a) providing to a patient a binocular vision assessment apparatus that includes
- a source of left eye image and right eye image pairs adapted to be viewed dichoptically, said pairs having a variable difference in information content between said left eye image and said right eye image, and wherein one image of said image pairs is information rich and another image of said image pairs is information poor and
- a dichoptic display system that presents a selected one of said image pairs as a right eye image to the patient's right eye and a left eye image to the patient's left eye, wherein said variable difference in information content is adjustable to achieve binocular vision in a patient having a deficiency of binocular vision;
- (b) receiving input from the patient regarding patient perception of said presented images;
- (c) adjusting said variable difference in information content between said right eye and left eye images as a function of said patient input;
- and
- (d) assessing the level of binocular vision based on a value of said variable difference.
A method of improving binocular vision in a patient comprising;
- (a) providing to a patient a binocular vision treatment apparatus that includes
- a source of left eye image and right eye image pairs adapted to be viewed dichoptically, said pairs having a variable difference in information content between said left eye image and said right eye image, and wherein one image of said image pairs is information rich and another image of said image pairs is information poor and
- a dichoptic display system that presents a selected one of said image pairs as a right eye image to the patient's right eye and a left eye image to the patient's left eye, wherein said variable difference in information content is adjustable to achieve binocular vision in a patient having a deficiency of binocular vision;
- (b) instructing said patient to perform at least one dichoptic task using said presented one of said image pairs;
- (c) adjusting said variable difference in information content and determining a difference necessary to achieve binocular vision in said patient;
- and
- (d) basing further therapy on said difference.
Dependencies are inferred from the claim text.