Written Question·Department for Transport·UIN 116781
Aviation: Colour Vision Deficiency
Tabled: 2 March 2026
Answered: 10 March 2026
Question
Mr Richard Holden
Conservative — Basildon and Billericay
To ask the Secretary of State for Transport, if she will make an assessment of the potential implications for her policies of the difference in colour vision medical standards between the UK Civil Aviation Authority and the (a) Irish Aviation Authority, (
Answer
Keir MatherThe UK approach to pilot colour vision testing involves initial screening using Ishihara test plates. Where applicants make a single error, advanced colour vision testing using the Colour Assessment and Diagnosis (CAD) test is required to measure colour v...
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