How do our eyes work? By Aimee (Explanation)

When you look at something you see different shades of light, which makes colour.

First light travels through the Cornea so you can look though a clear window. Then it goes into the Iris only letting a certain amount of light pass through the Pupil, the Pupil is an open door to the Eye. Once it’s in the eye it travels to the Lens. The Lens job is to focus on the light rays. After that it gets sent to the Retina, the Retina takes the light that your eye receives and changes it into nerve signals. The nerve signals get sent to the Optic nerve that leads the nerve signals up a pipe to the brain.

They turn into nerve signals so when they get sent to the brain the brain can understand what you are seeing.