what is shape of the pupil
In a new study, vision scientist Martin Banks has found that the shape of an animalâs pupils is a clue to its place in the food chain. Banks and his team looked at the eyes of 214 different species of land animals, and found a clear relationship between the shape of their pupils and their ecological role.
The pupil is a little hole in the centre of your eye and when bright light hits the eye the little ring round the eye that can be different colours on different peoples eyes closes over to let les light in.