Cornea: Clear coating on the outside to protect your eyes.

Pupil: Black dot in the centre of the eye. Allow light to be reflected in the eye.

Pupil

Iris: Coloured part around the pupil. Which regulates the amount of light.

Lens: Clear, convex in centre of eye which focuses light onto back of the eye.

Retina: Back of the eye ball connected to the optic nerve. Which is a screen where image is focussed.

Retina

The Optic nerve goes to your brain which sends the image to your brain.

Optic nerve