An interventional study of Assessment of distance and near visual acuity using "Vision Screening module" of "Easy Vision" application and Assessment of distance and near visual acuity using "Test Yourself module" of "Easy Vision" application in Vision Impairment and Blindness, sponsored by Shahid Beheshti University of Medical Sciences. Completed at 1 site in Iran, Islamic Republic of. Open to participants aged 10 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-07-27.
Sponsored by Shahid Beheshti University of Medical Sciences · Not applicable, Interventional, and Health services research
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.
161 studies on the registry are indexed under Blindness; 33 are open to participants now.
This study's enrollment of 120 is above the median of 30 across 105 interventional studies indexed under Blindness.
Browse Blindness studies →Shahid Beheshti University of Medical Sciences is the lead sponsor of 221 studies on the registry; 19 are open to participants now.
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Exclusion criteria:
Device: Assessment of distance and near visual acuity using "Vision Screening module" of "Easy Vision" application
Device: Assessment of distance and near visual acuity using "Test Yourself module" of "Easy Vision" application
Device: Assessment of distance and near visual acuity using "Peek Acuity" application
Other: Assessment of distance and near visual acuity using the conventional methods
The presenting visual acuity will be assessed using the Vision Screening module of the "Easy Vision" application.
The presenting visual acuity will be assessed using the Test Yourself module of the "Easy Vision" application.
The presenting visual acuity will be assessed using the "Peek Acuity" application.
The presenting visual acuity will be assessed using the conventional methods \["Chart: Tumbling E optotype" for assessing distance visual acuity and "Handheld chart: Tumbling E Near Point Vision Chart" for assessing near visual acuity\]
Distance visual acuity assessment with Easy Vision versus Peek Acuity versus conventional distance visual acuity chart
To assess the agreement between two smartphone-based evaluation of distance visual acuity (LogMAR unit) with Easy Vision and Peek Acuity and a conventional distance visual acuity chart (Tumbling E optotype)
Time frame: Through study completion [an average of 6 months]
Near visual acuity assessment with Easy Vision versus Peek Acuity versus conventional near visual acuity chart
To assess the agreement between two smartphone-based evaluation of near visual acuity (LogMAR unit) with Easy Vision and Peek Acuity and a conventional near visual acuity chart (Handheld chart: Tumbling E Near Point Vision Chart)
Time frame: Through study completion [an average of 6 months]
This study is completed, as verified in Apr 2021. You cannot join it, but the record below documents what was studied.
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Shahid Beheshti University of Medical Sciences