How do your Eyes work?

There are many different parts of the eye that help to create vision. We “see” with our brains; our eyes collect visual information and begin this complex process.

  • Light passes through the cornea, the clear, dome-shaped surface that covers the front of the eye. The cornea bends – or refracts – this incoming light.
  • The iris, the coloured part of the eye, regulates the size of the pupil, the opening that controls the amount of light that enters the eye.
  • Behind the pupil is the lens, a clear part of the eye that further focuses light, or an image, onto the retina.
  • The retina is a thin, delicate, photosensitive tissue that contains the special “photo-receptor” cells that convert light into electrical signals.
  • These electrical signals are processed further, and then travel from the retina of the eye to the brain through the optic nerve, a bundle of about one million nerve fibres.