Top 7 Facts about eyes

1. By far the most common eye colour in the world is brown but in the UK blue is now most common.

2. Percy Shaw of Halifax invented the cat’s eye road safety device in 1933 after being inspired by light reflections in a real cat’s eye. There are now around 500 million cat’s eyes on British roads.

3. According to research in 2015, blue-eyed people are more likely to become alcoholics. 

4. According to research in 2009, women’s faces are most attractive when the distance between the eyes is 46 percent of the face width and the eye to mouth distance is 36 percent of the face length.

5. The animal with the largest eyes is the colossal squid. In 2008 one colossal squid eye was measured at 11 inches across.

6. Percy Shaw of Halifax invented the cat’s eye road safety device in 1933 after being inspired by light reflections in a real cat’s eye. There are now around 500 million cat’s eyes on British roads.

7. Your eyeballs stay the same size all your life, from birth to death.