Determining vision related physical conditions from cross-parameter vision tests

• US 10,638,925 B2
• Filed: 11/26/2015
• Issued: 05/05/2020
• Est. Priority Date: 11/26/2014
• Status: Active Grant

• Current Assignee: Eyekon E.R.D. Ltd. (InnoVision Labs, Inc.)
• Original Assignee: Eyekon E.R.D. Ltd. (InnoVision Labs, Inc.)
• Inventors: Novik, Shai
• Primary Examiner(s): Thomas, Brandi N
• Application Number:
  US15/527,014
• Publication Number:
  US 20170360293A1
• Time in Patent Office: Days
• Field of Search: 351200, 351205, 351206, 351209-211, 351221, 351222, 351239, 351243-246
• CPC Class Codes: A61B 3/022 for testing contrast sensitivity
• CPC Class Codes: A61B 3/036 for testing astigmatism
• CPC Class Codes: A61B 3/06 for testing light sensitivity, e.g. adaptation; for testing colour vision
• CPC Class Codes: A61B 5/168 Evaluating attention deficit, hyperactivity
• CPC Class Codes: G09B 21/008 using visual presentation of the information for the partially sighted

Abstract

A method and system for determining visual related physical conditions of a user of a display device, determined from the user'"'"'s responses to a selection of visual-tasks. A dataset is provided for correlating the user'"'"'s responses with the corresponding scores, so that by measuring the degree of correlation between the user'"'"'s scores and a predetermined combination of the corresponding scores, the user'"'"'s visual physical condition can be determined. A system is also provided, including a user device as well as a remote server for providing visual acuity and related testing to detect certain vision deficiencies and visual related physical conditions. In addition, a user device application is provided.

Claims

1. A method for presenting images to a user, for determining at least one vision related physical condition, the method comprising processor implemented steps of:

displaying two or more visual-tasks to a user, wherein;

at least one of the visual-tasks is configured for complex contrast sensitivity (CCS) examination, which is comprising a target contrast sensitivity (CS) pattern in the presence of flanking patterns, and

at least one of the visual-tasks consists a single CS pattern, which is similar in shape to the target CS pattern of the CCS examination;

measuring responses of the user to the displayed visual-tasks;

comparing between the responses of the user to the visual-tasks having e similar target CS pattern;

associating and comparing the user'"'"'s responses and their relation with a dataset of expected results, respective to the displayed visual-tasks; and

retrieving measurements of least one vision related physical condition, corresponding to a predetermined combination of the degree of correlation between the user'"'"'s responses and the associated expected results.

2. The method of claim 1, further comprises selecting at least one visual-task, which comprises at least one feature of the group consisting of:

contrast sensitivity (CS) target pattern;

backward masking with any of;

CS target pattern, the CS central target pattern with flanking patterns, tumbling target symbol, and tumbling central target symbol between plurality of flanking symbols;

CCS examination; and

any combination thereof.

3. The method of claim 2, wherein the visual task of CCS examination comprises at least one of:

CS central target pattern with flanking patterns having predetermined spacing distance there-between,

tumbling target symbol with flanking patterns having predetermined spacing distance there-between, and

tumbling central target symbol between plurality of flanking symbols having predetermined spacing distance there-between.

4. The method of claim 1, wherein at least one of the following holds true:

the physical condition is at least of the group consisting of;

Astigmatism, Presbyopia, Amblyopia, Diabetic Retinopathy, Glaucoma, Age-Related Macular Degeneration (AMD), Major Depression, Dyslexia, attention deficit disorder (ADD), attention deficit hyperactivity disorder (ADHD);

the visual related condition of the user is determined with and/or without optical correction of the user'"'"'s vision;

the method further comprises reporting the retrieved measurements of the at least one visual related physical condition;

the displaying comprises repetitions for each of the displayed visual-tasks;

the method further comprising providing to the user visual and/or audio instructions in regards to a required response;

the method further comprising providing to the user visual and/or audio feedback in regards to the received responses;

the displaying is configured for one of the user'"'"'s eyes or for both;

the at least two visual-tasks comprise at least one of;

dynamic-images, static-images, and any combination thereof; and

the measuring comprises classifying the user'"'"'s response as being correct vs. incorrect, or classifying the user'"'"'s response for its'"'"' level of correctness.

5. The method of claim 1, wherein the at least two visual-tasks are which are configured by the similar shape target CS pattern, comprise at least one different character for the similar target patterns, the character is at least one selected from the group consisting of:

size of the target pattern, orientation of the target pattern, color of the target pattern, exposure duration, exposure spatial frequency, and exposure spatial phase.

6. The method of claim 1, wherein the at least two visual-tasks are at least two CS central target pattern, having at least one different character selected from the group consisting of:

the predetermined spacing, size of the target pattern, orientation of the target pattern, color of the target pattern, exposure duration, exposure spatial frequency, and exposure spatial phase.

7. The method of claim 1, wherein the at least two visual tasks are at least two tumbling target symbol, having at least one different character selected from the group consisting of:

size of the target symbol, orientation of the target symbol, color of the target symbol, exposure duration, exposure spatial frequency, and exposure spatial phase.

8. The method of claim 1, wherein the at least two visual-tasks are at least two tumbling central target symbol with plurality of flanking symbols, having at least one different character selected from the group consisting of:

size of the flanking symbols, orientation of the target symbol, orientation of the flanking symbols, color of the target symbol, color of the flanking symbols, exposure duration, exposure spatial frequency, exposure spatial phase, the spacing distance between the flanking symbol and the target symbol, and the spacing distance between the flanking symbols there-between.

9. The method of claim 2, wherein the spacing distance between the tumbling central target symbol and the flanking symbols is between 0.01% and 150% of the symbol size.

10. The method of claim 1, wherein the dataset of the expected results comprises responses of users with normal vision and/or responses of users which are diagnosed for having at least one vision related physical condition.

11. The method of claim 1, wherein the measuring comprises at least one of:

collecting the user'"'"'s response via a tactile and/or touch input device;

recognizing voice of the user;

monitoring and observing the user for at least one of;

gesture, eye-movements, blinking, and brain waves.

12. The method of claim 1, wherein the step of retrieving measurements of at least one vision related physical condition, is further responsive to a predetermined threshold for the degree of correlation.

13. The method of claim 1, wherein the flanking patterns of the CCS examination are similar in shape to the target CS pattern.

14. The method of claim 13, wherein the flanking patterns which are similar in shape to the target CS pattern, comprise at least one different character selected from the group consisting of:

size of the target pattern, orientation of the target pattern, color of the target pattern, exposure duration, exposure spatial frequency, and exposure spatial phase.