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| Name | Class |
|---|---|
| Neuro-Ophthalmology of Texas | OTHER |
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Group 4a and 4b was an FDA trial that showed that patients who have an Amsler grid abnormality on paper, have a similar abnormality on the app.
Group 7a and 7b was an FDA trial that showed that normal patients do not have false positives on the Amsler app as well as on the Amsler paper version. Further Vision on the app is slightly better than vision on the standard Sloan near card using a formula (vision is 7/10th of a line better on the app).
Detailed Description of 4A and 4B: A series of patients with central visual defects were identified and their names were given to the unblinded clinical coordinator. The clinical coordinator contacted the patients, described the study, arranged the appointments to come to the clinic one-at-a-time for a dedicated visit to participate in the study. Each patient experienced the same study process for their visit:
The investigators knew from prior clinic experience that the patients required a new and more detailed educational experience than was standard in order to have more reliable results for both the paper and app Amsler Grid test, in order to measure the central visual fields. The investigators focused on carefully training the patient through both written material and a video where the educational administrator was there to review this with the patient. The education focused on:
Training enhancement was prompted midway through the trial, when the unblinded sponsor and clinical coordinator reviewed patient test results. Initial conclusion was that the patients exhibited defect identification on both paper and app that could possibly be enhanced by improving the educational protocol. An updated educational protocol was provided which the sponsor discussed with the educational team which was implemented to test if this updated patient education would result in more reliable results. It was decided to utilize updated educational approach for all patients on both paper and the app. Additionally, the investigators, added a stylus for the app (replacing the patient's finger) in order to more closely simulate a pen which is utilized for the paper. This updated approach was submitted and approved by the IRB.
As a result of the above, a decision was made to have two cohorts in the study, the early education cohort 1 and the later education cohort 2. Patients in cohort 1 were trained on the device to draw a defect on the screen with the tip of their finger but on paper to use a pen. Patients in cohort 2 were trained on the device to draw a defect on the screen with a stylus and on paper with a pen. The result in Cohort 2 was that consistency of the patients test results were better for both test and re-test for both the Amsler grid on-paper and the EyeCTester device.
The statistical analysis in this report shows the overall results and also the improved results in Cohort 2 that likely is attributed to these educational enhancement and stylus additions.
The full protocol for the trial including the training is available in the WIRB trial documentation.
Sample Size Calculation by our statistician was verified to be the sample size used was statistically acceptable.
Summary: Amsler app and paper version were equivalent, and best when using a stylus on the app.
Detailed Description of 7A and 7 B A series of patients 22 and over without any vision problems being examined similar to the above (see WIRB description) with a different education protocol consisting of in-home video on the app, telemedical connection by COA to confirm teaching was understood, and if not reteach.
The statistical analysis in this report shows the overall results showed that the vision testing standard and app were similar, with better vision tested on the app, by a formula that approximates, 7/10 of a line better.
The statistical analysis in this report shows the overall results showed that the color testing standard and app were similar.
The statistical analysis in this report shows the overall results showed that the Amsler grid testing via standard near vision tests and app were exactly the same with neither having false positives.
The full protocol for the trial including the training is available in the WIRB trial documentation.
Sample Size Calculation by our statistician was verified to be the sample size used was statistically acceptable.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Groups in General all were done under the wcgIRB, even those that were Practice groups | Groups 1-3 were practice groups, gathering smartphone app installation, functional and usability feedback in preparation for later phase groups Groups 4a and 4b Cohort 1 and 2 is the FDA application finalized and submitted study groups Group 5-6 currently in continuing clinical trial during FDA application process |
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| 1-3,5 Developmental team(1), Technician(2) and Non-Clinical Groups(3) 5. Retinal practice | Individuals on the developmental team, staff members and outside clinic people 5 Retinal Practice (to do after FDA approval) |
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| 4a. Cohort 1. FDA group | Patients in Neuro-Ophthalmology of Texas (NOT) PLLC practice which has referrals from multiple practices including retinal patients. |
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| 4b. Cohort 2. FDA group | Patients in NOT practice |
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| 6 At Home use of app in continuing clinical trial during FDA decision | Patients are educated on the app at home via app video clips and brochure, and as necessary, online training with COA (ophthalmic assistants/technicians or other trained educators) in order to do remote physiologic vision monitoring or preclinic near vision check. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| EyeCTester | Device | Smartphone app that allows vision testing |
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| Measure | Description | Time Frame |
|---|---|---|
| Primary Outcome Measure for Groups 4a and 4b: | The Test-Retest Repeatability for the identified three common near-vision procedures will be measured to determine sample sizes to reach the objectives of this study. Patients will be recruited from a neuro-ophthalmology and/or retina clinic's new or established patient population. Thirty willing patients with known Amsler grid abnormalities (metamorphopsia, scotoma, field-cut field-cut) will each complete the study protocol. Test results will be statistically analyzed to compare the app test with the in-office paper test versions. This analysis will allow the population size to be measured which is needed for valid test results. | Study was conducted for each patient in one day. |
| Secondary Outcome Measure for Groups 4a and 4b | The limits of agreement will be reported by comparing the difference in measurements taken using In Clinic Near Vision Tests (ICNVT) vs Smart Phone Near Vision Tests (SPNVT). The investigators will determine the 95% limits of agreement by calculating the mean difference between ICNVT and SPNVT as well as the standard deviation. Histograms will be used to verify that the data is normally distributed. If the data is not normally distributed appropriate statistical transformation will be made by working directly with ratios. Once population size is determined with Objective 1 via test-retest, the investigators will then determine the limits of agreement between testing using SPNVT and ICNVT for patients known to have eye abnormalities that meet the inclusion/exclusion criteria. The first hypothesis is that testing using the SPNVT will be within a 95% limit of agreement with testing using ICNVT. The second hypothesis is that SPNVT will be non-inferior to ICNVT. | Study was conducted for each patient in one day. |
| Primary Outcome Measure for Groups 7a and 7b | The The Test-Retest Repeatability for the identified three common near-vision procedures will be measured to determine sample sizes to reach the objectives of this study. | Study was conducted for each patient in one day. |
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Inclusion Criteria for 4a and 4b:
The participant must have at least one eye which complies with all the inclusion criteria
Inclusion criteria:
Exclusion Criteria:
The participant must have at least one eye which complies with none of the exclusion criteria listed below.
Study Criteria for Group 7
Age Limits:22 and over
Inclusion Criteria for 7A and 7B:
Exclusion Criteria:
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For FDA approval Cohort 4a and 4b are the 2 groups being evaluated.
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| Name | Affiliation | Role |
|---|---|---|
| Rosa A Tang, MD | Neuro-Ophthalmology of Texas | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Neuro-ophthalmology of Texas, PLLC | Bellaire | Texas | 77401 | United States |
After FDA decision will send our results and statistical analysis to an appropriate journal for publication
If FDA approval we will publish this data
Access all of the above after publication
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| ID | Term |
|---|---|
| D009901 | Optic Nerve Diseases |
| D008268 | Macular Degeneration |
| ID | Term |
|---|---|
| D003389 | Cranial Nerve Diseases |
| D009422 | Nervous System Diseases |
| D005128 | Eye Diseases |
| D012162 | Retinal Degeneration |
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| 7a Cohort 1 FDA group responding to AI | Normal patients were tested with standard near vision tests compared with the smartphone app near vision tests. All patients were trained at home with app videos and by COA via telemedicine before coming to clinic. |
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| 7b Cohort 2 FDA group responding to AI | Normal patients were tested with standard near vision tests compared with the smartphone app near vision tests. All patients were trained at home with app videos and by COA via telemedicine before coming to clinic. |
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| D012164 |
| Retinal Diseases |