The process of seeing is a collaboration between the brain and the eye. How does the eye work to create sight, from the lens and iris to the pupil, retina and optic nerve?
- A far larger part of the brain is dedicated to seeing than to all the other senses put together.
- Light enters the eye through the cornea, which bends light towards the pupil.
- The coloured area surrounding the pupil is called the iris.
- The lens focuses light onto the retina, which is connected to the brain by the optic nerve.