Accuracy of Mobile-Based Vision Charts.

Benha University288 enrolled

Overview

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.

Study Type

OBSERVATIONAL

Enrollment

288

Conditions

Visual Spatial Processing

Interventions

Distant best corrected visual acuity assessmentDIAGNOSTIC_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.

Eligibility

Sex: ALLMin age: 4 YearsMax age: 70 YearsHealthy volunteers:

Medical Language ↔ Plain English

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.

Locations (1)

Al-Nil Hospital

Banhā, QA, Egypt

Outcomes

Primary Outcomes

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.

Time frame: Immediately after visual acuity testing using the standard chart projector.

Data from ClinicalTrials.gov

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