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How the colour blind test works

How the test works

The colour blindness test can check to see whether you're affected by various types of colour blindness, including Deuteranomaly/ Deuteranopia (red-green blindness), Protanomaly/ Protanopia (red-green blindness), or Tritanomaly/ Tritanopia (blue-yellow blindness).

All you need to do is click on the link and follow the instructions on the screen to either use the sample image or upload your own.

take the test

Why do the test?

Many of us go throughout our days experiencing life in every shade of colour imaginable, watching colours outside change as the seasons pass or even something as simple as getting the full experience from movies and videos played in full colour. It's hard to imagine having limited colour vision. A lot of people don't even realise they are colour blind, with estimates of around 300 million people across the globe who are affected. You might be asking yourself, How does colour blindness work? The experts from Pilestone can help clarify this for you!

The easiest way to explain how colour blindness works is to say that colour blindness is when someone is unable to see colours in the way that most people with normal vision can; however, the science behind this phenomenon is much more complex. Colourblindness is sometimes taken in the literal sense that you are blind from seeing any colour, and while this is rare (known as monochromacy), in most cases, people affected by colour blindness only have a select range of colours that they can't see.

So how does colour blindness work within your eyes and brain? To put it simply, within the retinas in your eyes, you have two different types of cells known as rods and cones. While rods are responsible for detecting light and dark, your cones are the ones that detect different colours in the light hitting your eyes. The light that normally touches your eyes is seen as white or containing every colour within it. When this light enters your eye, different cones are used to detect three different colours red, blue, and green at which point can then be translated into every colour imaginable when combined in the right way. Sometimes your cones may overlap, meaning that your red and green cones aren't able to do their job properly, leaving you with a muddled view of reds and greens, but leaving your blue vision undisturbed.

Since there are different combinations of colours that can be created, there are also various types of colour blindness, including red-green, yellow-orange, green-brown, pink-grey, blue-yellow, or blue-purple. If you experience any of these types of colour blindness, don't worry! Pilestone has colour blind glasses to help.

For more information on how our colour blind glasses work, get in touch with us today, or begin browsing our collection of colour blind glasses.

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