Aaron Williams-Mele recently received what to him must have been the best birthday gift ever.

If someone quips ’oh I’m colour blind’ when they can’t see a particular colour, it’s often dismissed as a funny quirk. Bur Marjorie Brennan discovers colour blindness can affect everything from playing sports to reading maps to career choice.

If your sight is something you take for granted, then watching this video may make you think again.