pupil, Light enters the eye through this black hole in the centre of the eye, Iris, the coloured part of the eye, lens, focuses the light entering the eye onto the back of the eye. It refracts th elight which turns the image we see upside down., cornea, the transparent coating which covers the eye and protects the iris and pupil at the front of the eye., sciera, the white part of the eye., retina, contains millions of phototreceptors which convert light into electrical impulses which are sent along the optic nerve to the brain., Optic nerve, sends signals representing colour, ligh and dark from the eye to the brain which interprets what we see.

The eye

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