Colour blind people are really good at spotting things that are far away, and they are better than most people at telling things apart by their shape.
Some colour blind people only have two kinds of cone cell in their eye. Others have three kinds, but the cones do not pick up the same light waves as the cone cells in most people's eyes do.
It’s been argued the Impressionists were short sighted.
The Boulevard Montmartre at Night, Camille Pissarro/Wikimedia Commons
Disease and disorders can affect how we see. Can the images in painted artworks tell us something about the state of an artist's vision?
But I asked for green highlights!
Edwin Butter / shutterstock
There must be some evolutionary force acting to maintain this visual 'defect'.
Australian bowler Mitchell Marsh receives the pink ball during the Test match between Australia and New Zealand at the Adelaide Oval.
AAP Image/Dave Hunt
The pink ball introduced to this year's day night cricket test can be difficult to see for some players, especially if they are colour blind. There is a better choice of colour.
Australian surfer Mick Fanning, seen here surfing at Snapper Rocks on the Gold Coast, has decided to change the colour of his surfboard. No more yellow.
AAP Image/Jesse Little
The recent shark attack was enough to convince Australian surfer Mick Fanning that the colour of his surfboard may have been a factor. But what do sharks actually see in the water?
A possible link between colour vision and the development of myopia (near-sightedness) has been found by an international…
New research could help prevent negative encounters between “us” and “them”.
We’ve known since early last year that sharks are most likely colour-blind. But today, in a paper published in Biology Letters by our team at UWA, we explain why this is the case. It’s a finding we believe…
This is how a person without colour blindness would see these coloured test tubes.
Bigstockphoto / Craig Colvin
Here are six test tubes filled with coloured dyes. How many different colours do you see? Most people say six, but some people would say only two or three. There are even some (very rare) people who see…