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.
Study Type
OBSERVATIONAL
Enrollment
1,374
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
Istanbul Medipol University
Istanbul, Turkey (Türkiye)
Prevalence and Severity of Colour Vision Deficiency among Turkish Children
number 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.
Time frame: january 2018-march 2019
the usability of the Colour Assessment and Diagnosis (CAD) test in children
number of children who were cooperative and carried out the full CAD test
Time frame: january 2018-march 2019
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