Colour vision deficiency (commonly called “colour blindness”) changes how certain colours appear, most often reds and greens, sometimes blues and yellows, and in rare cases almost all colours. It can affect reading charts at school, choosing clothes, reading signs or data visualisations at work, and even safety-related tasks.
Common types include:
- Red–green (most common)
- Blue–yellow (less common)
How colour blind glasses work
- The science in short: Our colour blind aids us
