COLOUR VISION DEFECTS
EYE HEALTHCARE – COLOUR VISION DEFECTS
Approx 7-8% of males and 0.5% of females show some form of colour vision defects. Telling the difference between red and green is the most common defect and will always be exclusively in males since it is carried on their genetic chromosome.
Your optometrist can easily check for deficiencies using the ‘Ishihara’( for red-green), ‘City’(blue-yellow) or ‘D15’ tests, particularly when there are vocational needs eg. electrical apprentices, pilots, railway employees etc. Although there is no cure for colour deficiency, thankfully it doesn’t get worse as life progresses.
Noel McCrystal
BSc.(Hons.)MCOptom.Dip.Sc.V MASv.P