How the Eye Works

Light enters the eye through the cornea and lens at the front of the eye and ends up at the retina at the back of the eye.

The cornea and lens bend the light so that it can create an image when it reaches the retina.
The retina is made up of special cells that collect the light signals and send them to the optic nerve at the back of the eye.
The optic nerve is made up of nerve cells that allow it to pass electrical signals to our brain so that our brain can process the image that we are looking at.

It's a bit like when you take a picture with a camera, which you then develop. The retina is like the camera film which stores the image. The image is sent from the retina to the brain where it is processed/developed. We see things when our eyes send light information about objects to our brain. The process doesn't take as long as it takes to get photos developed though - it happens very very quickly!