Here's how those viral colour blind glasses really work

Some people see the world differently. Literally. It’s a phenomenon called colour blindness. It’s not just people who can’ see colour at all. Some people just can’t see as many colours as the rest of us. Now, these glasses are working on changing that.

These glasses bring more colour to the colour blind by helping them see more hues and differentiate colours.

You have seen the viral reactions of people trying them.

But how do they work?

These glasses are made by EnChroma. They are intended to enhance the vibrancy and saturation of colours. They also help with depth and detail perception.The glasses work for four out of five people with red-green colour blindness.

Here’s how people with colour blindness see the world.

Those that are non-colour blind see about 1 million to 7 million different colour hues. Those with colour blindness see only about 10,000 to 100,000 different hues.

A vastly diminished colour spectrum.

Here’s how the glasses can help.

Most people have three colour cones in their eyes. Blue, green, and red. The ratio of light for each incoming colour is then sent to your brain.This ratio tells your brain what colour you should perceive.But with colour blindness, the red and green cones overlap more noticeably. This skews the ratio of light and colour signals, so your brain struggles to interpret anything with red and green in it.

EnChroma glasses have optical filters, which remove certain wavelengths of light. This helps establish a more accurate ratio of light entering the eye. So you perceive that colour more clearly.

The glasses do not work for everyone and they don’t completely correct the skewed ratio that the colour blind see.

They do help make the world more vibrant. One pair at a time.

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