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 Mather
The 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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Aviation: Colour Vision Deficiency — Written Question | TrustPolitics