Assessing the Turkish DDIVAT for Visual Acuity Measurement
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorTrakya University
About this trial
The goal of this observational methodological study is to validate the Turkish version of the DDIVAT visual acuity measuring device in a Turkish-speaking adult population.
The main questions it aims to answer are:
Does the Turkish version of the DDIVAT provide reliable and valid visual acuity measurements in Turkish speakers?
Are the results of the DDIVAT comparable to those obtained with the standard Snellen chart used in clinical practice?
Researchers will compare DDIVAT visual acuity test results with Snellen chart results to see if both methods produce consistent measurements.
Participants will:
Be adults aged 18 years or older, including both patients and healthy volunteers.
Undergo visual acuity testing using the DDIVAT system displayed on a smart TV connected to the university server.
Have their visual acuity re-measured using the standard Snellen optotype under the same conditions.
No medication or invasive procedure will be used. The study carries no risk to participants.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Adults aged 18 years or older
Disqualifiers
Age below 18 years
Trial population
Turkish-speaking adults (aged 18 and older), including both healthy volunteers and ophthalmology clinic patients, will be recruited from Trakya University Hospital, Department of Ophthalmology (Edirne, Türkiye).
Trial design
Design model
Cohort
Time perspective
Prospective
Treatments tested in this trial
DDIVAT Visual Acuity Test (Turkish Version)
Diagnostic testParticipants' visual acuity will be measured using the Turkish version of the DDIVAT digital visual acuity device and compared with Snellen chart results. No treatment or invasive procedure will be performed.
Treatment groups
200 Participants
are divided into 1 treatment groupGroup A: Participants Undergoing Visual Acuity Testing1 intervention
Trial outcomes
Primary outcomes
1
Agreement between DDIVAT (Turkish version) and Snellen chart visual acuity measurements
The primary outcome is to assess the level of agreement between visual acuity scores obtained using the Turkish version of the DDIVAT digital visual acuity device and those obtained using the standard Snellen chart. Statistical analysis will include correlation and Bland-Altman agreement methods to evaluate consistency and validity between the two testing methods.
Time frame
During a single study visit (same day assessment)Locations
Sponsors and contacts
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Source ClinicalTrials.gov
This trial is not recruiting at the moment. You can still explore other options: