Visual Spatial Processing
Conditions
Keywords
Visual acuity, Mobile-based chart, Snellen's chart
Brief summary
Analyzing the accuracy of mobile-based distant vision charts in clinical practice as an economic alternative for standard vision charts.
Detailed description
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.
Interventions
DIAGNOSTIC_TESTDistant best corrected visual acuity assessment
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.
Sponsors
Benha University
Study design
Observational model
CASE_ONLY
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
4 Years to 70 Years
Healthy volunteers
Yes
Inclusion criteria
* Subjects visited ophthalmology clinic at Al-Nil Hospital, Banha, EGYPT for visual acuity assessment. * Subjects that their best corrected visual acuity was ranged from 0.1 to 1.0 in decimal form measured on snellen's chart.
Exclusion criteria
* Subjects that refuse to measure visual acuity twice during the same visit. * Subjects that their best corrected visual acuity is less than 0.1 in decimal form by the standard chart projector.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Accuracy of mobile based snellen chart in measuring distant visual acuity. | Immediately after visual acuity testing using the standard chart projector. | To compare the decimal results of mobile based snellen chart for measuring distant vision with the decimal results of the standard snellen chart projector. |
Countries
Egypt
Outcome results
None listed