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Analyzing the accuracy of mobile-based distant vision charts in clinical practice as an economic alternative for standard vision charts.
Accuracy of mobile-based visual acuity testing in clinical practice is still debatable. The aim of this study was to analyze the accuracy of mobile-based distant vision chart in comparison to standard chart projector.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Standard vision chart. | Best corrected visual acuity measured by standard chart projector. |
| |
| Mobile based vision chart. | Best corrected visual acuity measured by mobile based chart with screen mirroring over 24 inch monitor. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Distant best corrected visual acuity assessment | Diagnostic Test | Measuring distant visual acuity on snellen's chart using two methods and results were converted to equivalent logarithm of minimum angle of resolution to compare accuracy of mobile based chart to the standard vision chart. |
| Measure | Description | Time Frame |
|---|---|---|
| Accuracy of mobile based "snellen chart" in measuring distant visual acuity. | To compare the decimal results of mobile based snellen chart for measuring distant vision with the decimal results of the standard snellen chart projector. | Immediately after visual acuity testing using the standard chart projector. |
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Inclusion Criteria:
Exclusion Criteria:
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Subjects aimed to asses their best corrected visual acuity or seek spectacles prescription at ophthalmology clinic at Al-Nil Hospital, Banha, EGYPT.
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| Name | Affiliation | Role |
|---|---|---|
| Ahmed A Abdelshafy, MD | Benha University | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Al-Nil Hospital | Banhā | QA | 13511 | Egypt |
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| ID | Term |
|---|---|
| D065855 | Spatial Processing |
| ID | Term |
|---|---|
| D013037 | Spatial Behavior |
| D001519 | Behavior |
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