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Assessing the Turkish DDIVAT for Visual Acuity Measurement

StatusNot Yet Recruiting
PhaseNot specified
Started
View on ClinicalTrials.gov ↗
Record status
This record was last updated December 4, 2025 (before its estimated April 30, 2026 completion). Its status may not reflect the trial's current state.

Record History

  1. Re-verified, no change to tracked fieldsv2
  2. Study First Submitted
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.
Trial Details
NCT Number NCT07240480
Lead Sponsor Trakya University
Conditions
(from sponsor)		 Visual Acuity, Refractive Errors, Myopia, Hyperopia, Astigmatism
Related terms Astigmatism, Hyperopia, Myopia, Refractive Errors
Enrollment 200 participants
Start Date
Primary Completion (estimated)
Study Completion (estimated)
Updated on ClinicalTrials.gov