Today is Colour Blind Awareness Day, and to celebrate, Optical Express has created a quirky colour blindness test.
The eye care specialists have developed images of four famous glasses wearers in the style of the Ishihara plate test, which is used to identify colour vision deficiency.
Famous faces (answers at the bottom) have been hidden in the spotted pictures, which were first developed in 1917 by Dr Shinobu Ishihara, to test for red-green colour deficiencies.
Colour blind people struggle to distinguish between red and green, and blue and yellow.
And other colours, such as purple, orange and brown often appear much duller than they would to people with normal vision.
Famous faces with the condition include Keanu Reeves, Eddie Redmayne and Prince William.
And Mark Zuckerberg who is said to have chosen Facebook’s blue logo as it was easier to distinguish.
The condition is more common in males, affecting around one in 12 men versus one in 200 women.
Stephen Hannan, Clinical Services Director at Optical Express, said: “Although a harmless condition, we want to raise awareness of just how common colour deficiency can be and stop it being overlooked in schools, the workplace and everyday life.
“Removing the stigma and providing greater information on the condition will help those who struggle to distinguish between certain colours lead a normal and unrestricted life."
Answers
1. Bono
2. Elton John
3. Iris Apfel
4. John Lennon
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