Iris, Controls how much light enters the pupil, Cornea, Transparent lens that refracts light as it enters the eye, Lens, Transparent disc that can change shape to focus light onto the retina, Retina, Contains light receptor cells - rods (detect light intensity) and cones (detect colour), Optic nerve, Sensory neuron that carries impulses between the eye and the brain, Pupil, Hole that allows light to enter the eye, Conjunctiva, A clear membrane that covers the white of the eye and the inside of the eyelids; it lubricates the eye and provides protection from external irritants, Ciliary muscle, A ring of muscle that contracts and relaxes to change the shape of the lens, Suspensory ligaments, Ligaments that connect the ciliary muscle to the lens, Sclera, The strong outer wall of the eyeball that helps to keep the eye in shape and provides a place of attachment for the muscles that move the eye, Fovea, A region of the retina with the highest density of cones where the eye sees particularly good detail, Blind spot, The point at which the optic nerve leaves the eye, where there are no receptor cells.

Eye structure

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