[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100611430":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":20,"centralContacts":25,"locations":10,"responsibleParty":35,"collaborators":10,"id":38,"slug":39,"hasResults":40,"nctId":41,"briefTitle":42,"officialTitle":43,"acronym":10,"eligibilityCriteria":44,"healthyVolunteers":45,"sex":46,"minAge":47,"maxAge":10,"enrollmentInfo":48,"targetDuration":51,"studyType":52,"phases":10,"briefSummary":53,"conditions":54,"keywords":60,"overallStatus":61,"whyStopped":10,"lastUpdateSubmitDate":62,"lastUpdatePostDateStruct":63,"startDateStruct":66,"completionDateStruct":68,"leadSponsor":70,"locationsCount":10},{"fullName":5,"class":6},"Trakya University","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Participants Undergoing Visual Acuity Testing",null,"All enrolled participants (n = 200) will complete two visual acuity measurements during a single visit: one using the DDIVAT (Digital Device Independent Visual Acuity Test) Turkish version and one using the standard Snellen chart. The study compares the agreement and test-retest reliability of these two methods. No intervention, medication, or treatment is applied.",[13],"Diagnostic Test: DDIVAT Visual Acuity Test (Turkish Version)",[15],{"type":16,"name":17,"description":18,"armGroupLabels":19,"otherNames":10},"DIAGNOSTIC_TEST","DDIVAT Visual Acuity Test (Turkish Version)","Participants' 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.",[9],[21],{"name":22,"affiliation":23,"role":24},"Hande Güçlü, M.D., Prof. Dr.","Trakya University Teaching and Research Hospital","PRINCIPAL_INVESTIGATOR",[26,31],{"name":27,"role":28,"phone":29,"phoneExt":10,"email":30},"Tuğçe Bek, M.D.","CONTACT","+90 533 560 2583","tugcebek@trakya.edu.tr",{"name":32,"role":28,"phone":33,"phoneExt":10,"email":34},"Ahmet Kaan Şimşek, Md.","+90 534 323 3010","akaansimsek@trakya.edu.tr",{"type":24,"investigatorFullName":36,"investigatorTitle":37,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"Prof. Dr. Hande Guclu","Department Head - Ophthalmology (Trakya Univ.)-Principal Investigator","100611430","assessing-the-turkish-ddivat-for-visual-acuity-measurement-100611430",false,"NCT07240480","Assessing the Turkish DDIVAT for Visual Acuity Measurement","Validation of the Turkish Version of the DDIVAT Visual Acuity Measuring Device in a Turkish-speaking Population","Inclusion Criteria:\n\n* Adults aged 18 years or older\n\nTurkish-speaking individuals able to understand the study purpose\n\nWillingness to participate and provide written informed consent\n\nParticipants with or without refractive errors (e.g., myopia, hyperopia, astigmatism)\n\nExclusion Criteria:\n\n* Age below 18 years\n\nIndividuals unable to complete visual acuity testing\n\nPresence of severe ocular pathology (e.g., corneal opacity, retinal detachment) that prevents accurate measurement\n\nCognitive or communication difficulties preventing informed consent",true,"ALL","18 Years",{"count":49,"type":50},200,"ESTIMATED","1 Day","OBSERVATIONAL","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.\n\nThe main questions it aims to answer are:\n\nDoes the Turkish version of the DDIVAT provide reliable and valid visual acuity measurements in Turkish speakers?\n\nAre the results of the DDIVAT comparable to those obtained with the standard Snellen chart used in clinical practice?\n\nResearchers will compare DDIVAT visual acuity test results with Snellen chart results to see if both methods produce consistent measurements.\n\nParticipants will:\n\nBe adults aged 18 years or older, including both patients and healthy volunteers.\n\nUndergo visual acuity testing using the DDIVAT system displayed on a smart TV connected to the university server.\n\nHave their visual acuity re-measured using the standard Snellen optotype under the same conditions.\n\nNo medication or invasive procedure will be used. The study carries no risk to participants.",[55,56,57,58,59],"Visual Acuity","Refractive Errors","Myopia","Hyperopia","Astigmatism",[55,56],"NOT_YET_RECRUITING","2025-11-26",{"date":64,"type":65},"2025-12-04","ACTUAL",{"date":67,"type":50},"2025-12-01",{"date":69,"type":50},"2026-05-31",{"name":5,"class":6}]