The invention concerns a couple of test images, for a binocular refraction method, that comprises: —a first test image (21) to be provided to a first eye of a subject, comprising a central image (21c) surrounded by a first peripheral image (21p), this central image comprising at least one optotype (21o); and - a second test image (22) to be provided to a second eye of the subject, comprising a central image (22c) surrounded by a second peripheral image (22p) substantially identical to the first peripheral image, this central image being deprived of optotypes, or comprising only optotypes (22o) with a low contrast or sharpness level. The invention concerns also an associated binocular refraction method and refraction instrument, and an associated computer program.

The present invention relates to a stimulus information compiling method for tests, characterized in that, the stimulus information compiling method comprises the following steps: selecting and using stimulus information which follows a statistics-normal distribution and is analyzed and measured by validity to form a stimulus information database (Q); reasonably setting at least one stimulus information to be a test including at least one test sequence, for a subject to make a selection according to his or her personal interests; comparing a test score of the subject with that of a valid sample person in a normal distribution model, thereby confirming the distribution of the subject in each cognitive dimension. The present invention compares a test score of the subject with that of a valid sample person in a normal distribution model, thereby confirming the test result of the subject.

The present invention relates to a stimulus information compiling method for tests, characterized in that, the stimulus information compiling method comprises the following steps: selecting and using stimulus information which follows a statistics-normal distribution and is analyzed and measured by validity to form a stimulus information database (Q); reasonably setting at least one stimulus information to be a test including at least one test sequence, for a subject to make a selection according to his or her personal interests; comparing a test score of the subject with that of a valid sample person in a normal distribution model, thereby confirming the distribution of the subject in each cognitive dimension. The present invention compares a test score of the subject with that of a valid sample person in a normal distribution model, thereby confirming the test result of the subject.

A vision inspection and correction method, which mainly uses an image adjustment software/device to separate the eyes of the inspected person on an independent display screen, and the visual mark seen by the same vision is designed to be misaligned; through the guidance and interaction of the inspector and the inspected person, the inspector can adjust the image operation to zoom in/out/shift/focus/diverge/rotate, etc., so that the inspected person's binocular images can be clearly distinguished and adjusted. Then, the binocular images are aligned, and the inspector will implant the correction parameters during the image adjustment process into 3D projectors, VR (virtual reality), AR (augmented reality device), MR hybrid reality device and other equipment to adjust the binocular digital image parameters, thus the users can enjoy personalized adjustment and comfortable images of both eyes, or provide them to lens makers, based on this, create lenses that can make the inspected person's eyes see clearly aligned images.

A method of determining a dominant eye includes acquiring indicator coordinates, left-eye coordinates, and right-eye coordinates of a user at a plurality of time points; calculating left-eye difference information about an angle, distance, or direction specified based on a straight line passing through the indicator coordinate and the left-eye coordinate at a first time point and a straight line passing through the indicator coordinate and the left-eye coordinate at a second time point, and right-eye difference information about an angle, distance, or direction specified based on a straight line passing through the indicator coordinate and the right-eye coordinate at the first time point and a straight line passing through the indicator coordinate and the right-eye coordinate at the second time point; and determining the dominant eye of the user with reference to the left-eye difference information and the right-eye difference information.

A method of determining a dominant eye includes acquiring indicator coordinates, left-eye coordinates, and right-eye coordinates of a user at a plurality of time points; calculating left-eye difference information about an angle, distance, or direction specified based on a straight line passing through the indicator coordinate and the left-eye coordinate at a first time point and a straight line passing through the indicator coordinate and the left-eye coordinate at a second time point, and right-eye difference information about an angle, distance, or direction specified based on a straight line passing through the indicator coordinate and the right-eye coordinate at the first time point and a straight line passing through the indicator coordinate and the right-eye coordinate at the second time point; and determining the dominant eye of the user with reference to the left-eye difference information and the right-eye difference information.

A method for performing an assessment of vision is provided, and comprises: determining a current difficulty level for the assessment; displaying a question of the assessment, the question including a visual element that has a movable pattern, the movable pattern having at least one variable attribute that is related to the current difficulty level; in response to receipt of an inputted answer, determining whether the inputted answer is correct; and determining whether the assessment is to be concluded, and in the affirmative, generating a result of the assessment based on the current difficulty level.

A system for testing and/or training the vision of a user is disclosed herein. The system includes a motion sensing device, a visual display device having an output screen, and a data processing device operatively coupled to the motion sensing device and the visual display device. In one embodiment, the data processing device is programmed to generate and display a configuration of a visual object on the visual display device during the same cycle of rotational head displacement when the actual head velocity or speed for the user reaches or exceeds a prescribed threshold percentage of the target velocity or speed. In another embodiment, the data processing device is programmed to increase a value of a prescribed amplitude or period for the head rotational displacement of the user for a successive trial of a test or training routine when a peak head velocity or speed is determined to have increased.

A method of identifying individuals impaired by a psychoactive substance such as cannabis. The method includes presenting monocularly to a subject being tested; to each eye separately, a sinusoidal grating pattern of fixed spatial frequency with achromatic contrast or color contrast between grating stripes being temporally alternately modulated at a temporal frequency that ranges between 10 Hz and 60 Hz with a pattern of the contrast being such that the subject being tested can see a frequency doubling in the grating pattern.

A method of identifying individuals impaired by a psychoactive substance such as cannabis. The method includes presenting monocularly to a subject being tested; to each eye separately, a sinusoidal grating pattern of fixed spatial frequency with achromatic contrast or color contrast between grating stripes being temporally alternately modulated at a temporal frequency that ranges between 10 Hz and 60 Hz with a pattern of the contrast being such that the subject being tested can see a frequency doubling in the grating pattern.