Accuracy of Mobile-Based Vision Charts.

Completed

• Conditions: Visual Spatial Processing
• Interventions: Diagnostic Test: Distant best corrected visual acuity assessment

• Registration Number: NCT05251155
• Lead Sponsor: Benha University

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.

Study Timeline

• Study Start: 2020-02-01
• Primary Completion: 2021-04-11
• Study Completion: 2021-07-21
• Study First Submitted: 2022-02-10
• Study First Submitted QC: 2022-02-18
• Study First Posted: 2022-02-22
• Status Verified: 2022-03
• Last Update Submitted: 2022-03-13
• Last Update Posted: 2022-03-29

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 288

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.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Standard vision chart.	Distant best corrected visual acuity assessment	Best corrected visual acuity measured by standard chart projector.
Mobile based vision chart.	Distant best corrected visual acuity assessment	Best corrected visual acuity measured by mobile based chart with screen mirroring over 24 inch monitor.

Primary Outcome Measures

Name	Time	Method
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.

Trial Locations

Locations (1)

Al-Nil Hospital; 🇪🇬 Banhā, QA, Egypt