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OpenTrials
Completed

NCT Number: NCT04048499

Prevalence and Severity of Colour Vision Deficiency Among Turkish Children

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.

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Key information

Conditions

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

Age range

6 year–18 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Istanbul Medipol University

Istanbul, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

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Treatment and study plan

the Colour Assessment and Diagnosis (CAD) test

Device

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

Primary outcomes

  1. Prevalence and Severity of Colour Vision Deficiency among Turkish Children

    Time frame: january 2018-march 2019

    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.

  2. the usability of the Colour Assessment and Diagnosis (CAD) test in children

    Time frame: january 2018-march 2019

    number of children who were cooperative and carried out the full CAD test

Sponsors and collaborators

Lead sponsor

Medipol University

Other

Registry information

Important dates

Study start
2018
Primary completion
2019
Study completion
2019
First posted
Aug 7, 2019
Registry last updated
Aug 9, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.