Colours around us make our world more beautiful and interesting but the world isn’t that colourful for people who suffer from colour blindness. People with normal colour vision have three sets of receptors or cones in their eyes that pick up red, green and blue pigments also known as primary colours.

In the case of colour blind people, their cones or receptors pick up colours with spectra that overlap so they have trouble distinguishing red and green though everything else related to the visual system viz. wiring that connects the retina to the brain and the brain itself are completely normal or intact.

The EnChroma Labs Company has utilised this same fact in helping colour blind people to see colours. They have made such glasses called EnChroma that let colour blind people see colours by changing how the colour is perceived. These glasses contain a filter that absorbs light where the spectra overlap the most, effectively pushing a wedge between the frequencies of light that the two cones pick up.

The result is a “colour boost” that allows a colour blind person to distinguish the colours more clearly. It is to be noted that the EnChroma glasses are not a cure for colour blindness. It’s just a tool to make the lives of colour blind people livelier by bringing some colours into it.

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Author:Technology Blog