Method for quantifying ocular dominance of a subject and apparatus for implementing a method for quantifying ocular dominance of a subject

A device comprising:

• processing circuitry configured to control display of a set of images for quantifying ocular dominance of a subject, the set of images including a first image representing a first target and a second image representing a second target, wherein:
• the first image and the second image are such that the first target on the first image has an identical position, an identical orientation, an identical size and an identical shape to the second target on the second image;
• the first target comprises n points and the second target comprises n points where n≥3, the n points of the first target having a same shape and a same size as the n points of the second target, and the n points of the first target having a different phase shift from the n points of the second target;
• each point PLi of the first target matches with a point PRi of the second target where point PLi has a same position in the first image as point PRi in the second image where 1≤i≤n;
• to each point of the first target and to each point of the second target corresponds respectively a feature value VLi for the first target and a feature value VRi for the second target;
• feature values of the at least three points of the first target, which have the same shape and the same size as the points of the second target and which have the different phase shift from the points of the second target, differ such that an intensity of the feature values, of the at least three points of the first target, gradually increases between each of the at least three points of the first target, and such that an intensity of the feature values, of the at least three points of the second target. gradually decreases between each of the at least three points of the second target;
• and
• for two points of the first target having feature values VLi and VLj, respectively, and two points of the second target having feature values VRi and VRj, respectively,
• VLi+VRi=VLj+VRj for any i and j where 1≤j≤n.

A method for quantifying ocular dominance of a subject comprising:

• displaying a first image to a first eye of the subject, the first image representing a first target;
• displaying a second image to a second eye of the subject, the second image representing a second target;
• checking that the subject sees a fused image from the first image and the second image, the fused image comprising a fused target with feature values;
• generating a first report describing the features values of the fused image;
• and
• determining which eye is a dominant eye of the subject based on the first report, wherein
• the first image and the second image are such that the first target on the first image has an identical position, an identical orientation, an identical size and an identical shape to the second target on the second image;
• the first target comprises n points and the second target comprises n points where n≥3, the n points of the first target having a same shape and a same size as the n points of the second target, and the n points of the first target having a different phase shift from the n points of the second target;
• each point PLi of the first target matches with a point PRi on the second target where point PLi has a same position in the first image as point PRi in the second image, where 1≤i≤n;
• to each point of the first target and to each point of the second target corresponds respectively a feature value VLi for the first target and a feature value VRi for the second target;
• feature values of the at least three points of the first target, which have the same shape and the same size as the points of the second target and which have the different phase shift from the points of the second target, differ such that an intensity of the feature values, of the at least three points of the first target, gradually increases between each of the at least three points of the first target, and such that an intensity of the feature values, of the at least three points of the second target, gradually decreases between each of the at least three points of the second target;
• and
• for two points of the first target having feature values VLi and VLj, respectively, and two points of the second target having feature values VRi and VRj, respectively, VLi+VRi=VLj+VRj for any i and j where 1≤j≤n.

A method for adjusting a binocular balance of a subject comprising:

• displaying a first image to a first eye of the subject, the first image representing a first target;
• displaying a second image to a second eye of the subject, the second image representing a second target;
• checking that the subject sees a fused image from the first image and the second image, the fused image comprising a fused target with feature values;
• generating a report describing the features values of the fused image;
• determining which eye is a dominant eye of the subject based on the report;
• and
• providing a correction to the dominant eye of the subject by adjusting a power lens in front of the first eye and/or the second eye until the feature values of the fused image are constant for the subject, wherein
• the first image and the second image are such that the first target on the first image has an identical position, an identical orientation, an identical size and an identical shape to the second target on the second image,
• the first target comprises n points and the second target comprises n points where n≥3, the n points of the first target having a same shape and a same size as the n points of the second target, and the n points of the first target having a different phase shift from the n points of the second target;
• each point PLi of the first target matches with a point PRi on the second target where point PLi has a same position in the first image as point PRi in the second image where 1≤i≤n;
• to each point of the first target and to each point of the second target corresponds respectively a feature value VLi for the first target and a feature value VRi for the second target;
• feature values of the at least three points of the first target, which have the same shape and the same size as the points of the second target and which have the different phase shift from the points of the second target, differ such that an intensity of the feature values, of the at least three points of the first target, gradually increases between each of the at least three points of the first target, and such that an intensity of the feature values, of the at least three points of the second target, gradually decreases between each of the at least three points of the second target;
• and
• for two points of the first target having feature values VLi and VLj, respectively, and two points of the second target having feature values VRi and VRj, respectively, VLi+VRi=VLj+VRj for any i and j where 1≤j≤n.