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Updated 09 December 2015

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Statistics show that 8 percent of men and 0.5 percent of women have a common form of red-green colour blindness.

A person with red-green colour blindness experiences the world differently because their red and green photopigments have more overlap than normal. By overlap, we mean spectral overlap, which is related to how the photopigments absorb light.

If you, or a friend, are affected, you may want to invest in a pair of EnChroma Colour Blindness Glasses that will help you see the true colours of flowers, and the colours of the traffic lights – and that's just part of it.

The company recently created these nifty lenses that use high-tech optics to enhance colour before it reaches the eye. They're not cheap, though, at around R4000 a pair, but worth it for those who want to see the full beauty of the world.

Read: What it's like to be colour blind.

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