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Prevalence and Severity of Colour Vision Deficiency Among Turkish Children

Prevalence and Severity of Colour Vision Deficiency Among Turkish Children

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04048499
Enrollment
1374
Registered
2019-08-07
Start date
2018-01-01
Completion date
2019-03-01
Last updated
2019-08-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

CAD Test; Children's Vision; Colour Assessment; Colour Vision; Turkey

Brief summary

To evaluate the usability of the Colour Assessment and Diagnosis (CAD) test in children. To determine the prevalence of colour vision deficiency (CVD) among Turkish children, to identify the class of deficiency and to quanify severity of loss.

Interventions

DEVICEthe Colour Assessment and Diagnosis (CAD) test

The CAD test (City Occupational Ltd, London, UK) measures the severity of red-green and yellow-blue colour vision loss according to red-green and yellow-blue thresholds which are expressed in CAD units and diagnoses accurately the subject's class of colour vision

Sponsors

Medipol University
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
6 Years to 18 Years
Healthy volunteers
Yes

Inclusion criteria

children with aged 6-16 years, who attended the ophthalmology department at the Istanbul Medipol University -

Exclusion criteria

Children with known or current evidence of ocular pathology (other than refractive errors), with history of long term use of medication, previous ocular surgery and those with chronic systemic diseases were excluded from the study \-

Design outcomes

Primary

MeasureTime frameDescription
Prevalence and Severity of Colour Vision Deficiency among Turkish Childrenjanuary 2018-march 2019number of children with colour vision deficiency (CVD) among Turkish children who attend to the clinic in a period o time, number of children in each class of deficiency (protan, deutan) and number of children in each category according to severity.
the usability of the Colour Assessment and Diagnosis (CAD) test in childrenjanuary 2018-march 2019number of children who were cooperative and carried out the full CAD test

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026