NCT04936100

Assessment of the Validity, Reliability, and Feasibility of Two Smartphone Applications for Testing the Visual Acuity

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 120 (actual)
• Sponsor: Shahid Beheshti University of Medical Sciences · Academic / Other
• Sex: All
• Age: 10 Years
• Healthy volunteers: Accepted

Summary

Visual acuity (VA) is the most common measure of visual function globally. In clinical settings and during screening events, VA is an important measure to quantify changes in vision over time. Additionally, in the context of epidemiological studies and population-based surveys, VA is a critical measure to determine the presence and degree of vision impairment and to report on the indicators of effective eye care service coverage (i.e. refractive error and cataract surgery), that are currently considered by World Health Organization (WHO) for monitoring progress towards the Universal Health Coverage. There are numerous applications for assessing VA; however, the number of validated applications is limited. In this study, the investigators aim to evaluate the external validity, intra- and inter-observer reliability, and feasibility of two applications ("Easy Vision" and "Peek Acuity") for testing the visual acuity.

Conditions

• Vision Impairment
• Blindness

Interventions

Type	Name	Description
DEVICE	Assessment of distance and near visual acuity using "Vision Screening module" of "Easy Vision" application	The presenting visual acuity will be assessed using the Vision Screening module of the "Easy Vision" application.
DEVICE	Assessment of distance and near visual acuity using "Test Yourself module" of "Easy Vision" application	The presenting visual acuity will be assessed using the Test Yourself module of the "Easy Vision" application.
DEVICE	Assessment of distance and near visual acuity using "Peek Acuity" application	The presenting visual acuity will be assessed using the "Peek Acuity" application.
OTHER	Assessment of distance and near visual acuity using the conventional methods	The presenting visual acuity will be assessed using the conventional methods \["Chart: Tumbling E optotype" for assessing distance visual acuity and "Handheld chart: Tumbling E Near Point Vision Chart" for assessing near visual acuity\]

Timeline

• Start date: 2021-06-23
• Primary completion: 2021-12-23
• Completion: 2022-01-30
• First posted: 2021-06-23
• Last updated: 2022-07-27

Locations

1 site across 1 country: Iran