NCT04936100|Completed
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Sponsor study identifier
interventional
120
1 country
1
Study Start
June 23, 2021
Actual (reported)Primary Completion
December 23, 2021
Actual (reported)Study Completion
January 30, 2022
Actual (reported)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.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
January 30, 2022
Actual (reported)Click on a node to explore related trials.
Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
April 25, 2021
Actual (reported)June 23, 2021
Actual (reported)June 23, 2021
Actual (reported)December 23, 2021
Actual (reported)January 30, 2022
Actual (reported)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)
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)
Through study completion [an average of 6 months]
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.
Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences
Tehran, Iran
120 participants (actual enrollment reported by the registry).
First Submitted
April 25, 2021
First Posted
June 23, 2021
Study Start
June 23, 2021
Actual (reported)Visual Information Restoration and Rehabilitation Via Sensory Substitution Technology in Children
The presenting visual acuity will be assessed using the "Peek Acuity" application.
The presenting visual acuity will be assessed using the conventional methods \["Chart: Tumbling E optotype" for assessing distance visual acuity and "Handheld chart: Tumbling E Near Point Vision Chart" for assessing near visual acuity\]
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Contact the study team to confirm eligibility.
Primary Completion
December 23, 2021
Actual (reported)Study Completion
January 30, 2022
Actual (reported)Last Updated
July 27, 2022
Record last verified: 2021-04
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Source: ClinicalTrials.gov.
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