Are YOU colour blind? These incredible images reveal how the world looks with four different colour deficiencies
Colourblindness affects 1 in 200 women in the world and 1 in 12 men in the world, equating to 2.7 million people in Britain - about 4.5 per cent of the population
THERE are more than two million people in Britain who suffer from colourblindness.
Colourblindness, or colour vision deficiency, comes in different variations and means a person struggles to identify and distinguish between certain colours.
According to the NHS, it affects 1 in 200 women in the world and 1 in 12 men in the world, equating to 2.7 million people in Britain - about 4.5 per cent of the population.
Total colourblindness, meaning a person is unable to see any colour, is very rare.
Most people with colour vision deficiency have difficulty distinguishing between shades of red, yellow and green.
This is known as "red-green" colour vision deficiency.
1. Deuteranomalia
People with deuteranomalia have a reduced sensitivity to green light.
It is the most common form of colourblindness.
People with this condition generally have difficulty distinguishing between reds, greens, browns and oranges.
They are more likely to confuse mid-reds with mid-greens, blue-greens with grey and mid-pinks, bright greens with yellow and pale pinks with light grey.
2. Protanopia
For people with this condition, all shades of red and green look very faded.
But yellows and blues are largely unaffected.
It is caused by a reduced sensitivity to red light.
Like deuteranomalia, people have trouble distinguishing between reds, greens, browns and oranges.
They are also more likely to confuse black with shades of red, dark brown with dark green and some blues with some reds, purples and dark pinks.
3. Tritanopia
The most common colour confusions for tritanopes are light blues with greys, dark purples with black, mid-greens with blues and oranges with reds.
It is commonly called blue-yellow colourblindness.
It is a very rare form of colourblindness.
4. Total colourblindness (Monochromacy)
As the picture shows, people with this form of colourblindness cannot see colour at all.
They see the world through different shades of grey and black.
It is caused by the total absence of either two or three of the retinal cones in the back of the eye, which allow people to process light into colour.
Being totally colour blind makes everyday life much more challenging because he ability to tell the difference between colours of a similar level of brightness becomes nearly impossible.
That makes things like distinguishing between the colours on traffic lights very difficult.
Here is a look at some comparisons between the four types of colourblindness...
1. Watch out on the roads... traffic lights can appear very different
2. The rainbow is not as bright for some
4. New York's iconic yellow cabs appear PINK to some
5. A delicious (or not so delicious-looking) pizza
6. Taste the rainbow
7. Red sky in the morning, sailor's warning
8. Some of the colours in these flowers is lost altogther
9. This incredible scenery is slightly skewed
10. It paints a picture
11. An autumn stroll looks different for some
12. The Simpson's as you have never seen them before
13. A fresh - or not so fresh - looking apple
14. They say you eat with your eyes
15. The tropical colours in these parrots is not so clear
16. Hair of a different colour
17. Some can't distinguish oranges and blues
18. A bright red tram looks green to some
19. Pepsi takes on a different colour
20. One of these pictures looks like a sepia filter
21. The contrast of colours fades
22. What is a plate of fresh fruit t some, appears like a plate of rotten fruit to others
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