Accuracy of Mobile-Based Vision Charts.

NCT ID: NCT05251155

Last Updated: 2022-03-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

288 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-02-01

Study Completion Date

2021-07-21

Brief Summary

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Analyzing the accuracy of mobile-based distant vision charts in clinical practice as an economic alternative for standard vision charts.

Detailed Description

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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.

Conditions

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Visual Spatial Processing

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Standard vision chart.

Best corrected visual acuity measured by standard chart projector.

Distant best corrected visual acuity assessment

Intervention Type 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.

Mobile based vision chart.

Best corrected visual acuity measured by mobile based chart with screen mirroring over 24 inch monitor.

Distant best corrected visual acuity assessment

Intervention Type 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.

Interventions

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Distant 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.

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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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.
Minimum Eligible Age

4 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Benha University

OTHER

Sponsor Role lead

Responsible Party

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Ahmed Abdelshafy

Lecturer of Ophthalmology

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Ahmed A Abdelshafy, MD

Role: STUDY_CHAIR

Benha University

Locations

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Al-Nil Hospital

Banhā, QA, Egypt

Site Status

Countries

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Egypt

Other Identifiers

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RC-15-2-01

Identifier Type: -

Identifier Source: org_study_id

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