5 FACTS

It is believed that blue eyes didn’t start showing up until about 6,000 years ago when a genetic mutation developed that led to blue eyes. That means that all blue-eyed people are related. Brown is still the most common eye colour (approximately 79% of the world’s population has been recorded to have brown eyes).

Our eyes can distinguish over 500 shades of grey, meanwhile are able to recognise only three colours: red, blue and green. All other colours are a mix of the three.
2 percent of women have a rare mutation that allows them to see 100 million colours with the help of an extra membrane on their retina. 1 in 12 men do not distinguish colours.

However, the ears and nose never stop growing.

The lens on the human eye is much faster than that of a camera.
Also, eyes can process 36,000 bits of information per hour.

Images arrive at your eye upside-down, split in half and distorted. Your brain flips the image for you so naturally that you're perceiving everything right side up. Plus, images start divided in half and distorted as each one of your eyes perceives the world. Your brain then goes to work pairing the images together to give you one, clean panoramic view.