Vision testing and/or training using adaptable visual indicia
The present invention tests and/or trains the visual sensitivity of a subject using adaptable visual indicia. One or more visual indicia possessing a visual trait are displayed to the subject. The displayed visual indicia possessing a visual trait may be adjusted to determine when a subject can and cannot be perceived by the subject. A displayed visual indicia may be adjusted in its size, rate of movement, direction of movement, location of display, duration of display, or other characteristic. To determine whether a subject correctly perceived the visual trait possessed by a displayed visual indicia, an input may be received from the subject. If an input received corresponds to the visual trait possessed by the displayed visual indicia, the subject may be determined to have correctly perceived the displayed visual indicia and the visual trait.
1. A method for testing and/or training the visual sensitivity of a subject, the method comprising:
(a) displaying a visual indicia possessing a visual trait defining an orientation of the visual indicia to a subject;
(b) increasing a size of the displayed visual indicia;
(c) receiving an input from the subject indicating that the subject perceived the visual indicia possessing the visual trait, the input being dependent upon an orientation of the visual indicia perceived by the subject;
(d) comparing the visual trait possessed by the displayed visual indicia to the input received from the subject to determine whether the input corresponds to the visual trait possessed by the visual indicia;
(e) recording the size of the visual indicia when the input was received from the subject and recording whether the input corresponds to the visual trait possessed by the visual indicia;
(f) iteratively repeating steps (a)-(e) a predetermined number of times; and
(g) calculating an average size of the indicia based on the recorded size of the visual indicia when the input was received from the subject.
2. A method for testing and/or training the visual sensitivity of a subject, the method comprising:
(a) displaying a visual indicia possessing a visual trait defining an orientation of the visual indicia to a subject;
(b) increasing a size of the displayed visual indicia;
(c) receiving an input from the subject indicating that the subject perceived the visual indicia possessing the visual trait, the input being dependent upon an orientation of the visual indicia perceived by the subject;
(d) comparing the visual trait possessed by the displayed visual indicia to the input received from the subject to determine whether the input corresponds to the visual trait possessed by the visual indicia;
(e) recording the size of the visual indicia when the input was received from the subject and recording whether the input corresponds to the visual trait possessed by the visual indicia;
(f) iteratively repeating steps (a)-(e) until a predetermined number of subject-provided inputs have been received; and
(g) calculating an average size of the indicia based on the recorded size of the visual indicia when the input was received from the subject.
3. A method for testing and/or training the visual sensitivity of a subject, the method comprising:
(a) displaying a visual indicia possessing a visual trait defining an orientation of the visual indicia to a subject;
(b) increasing a size of the displayed visual indicia;
(c) receiving an input from the subject indicating that the subject perceived the visual indicia possessing the visual trait, the input being dependent upon an orientation of the visual indicia perceived by the subject;
(d) comparing the visual trait possessed by the displayed visual indicia to the input received from the subject to determine whether the input corresponds to the visual trait possessed by the visual indicia;
(e) recording the size of the visual indicia when the input was received from the subject and recording whether the input corresponds to the visual trait possessed by the visual indicia; and
(f) iteratively repeating steps (a)-(e) until the received inputs that correspond to the visual trait possessed by the visual indicia occur at a given size of the displayed visual indicia for a predefined number of occurrences, wherein the steps of iteratively repeating steps (a)-(e) further comprises:
defining a relative visual indicia size range;
comparing the size of the indicia when the subject provided the input that corresponds to the visual trait possessed by the visual indicia for each iteration to determine what percentage falls within the defined relative visual indicia size range; and
determining, after a predetermined number of iterations, that if a predetermined percentage of those iterations fall within the defined relative indicia size range, then the inputs indicating that the subject correctly perceived the visual indicia possessing the visual trait consistently occur at a given size of the displayed visual indicia that corresponds to the size of a displayed visual indicia within that range.