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conjunctiva - A protective transparent covering that stops dust and dirt damaging the cornea. It also keeps the cornea moist., cornea - Transparent part of the sclera that allows light to enter., pupil - The opening in the middle of the iris through which light passes., iris - The colourful part of the eye. Consists of radial and circular muscles that contract and relax to control the size of the pupil., lens - Bends (refracts) light and focuses the light rays on the retina., retina - Contains receptor cells that are sensitive to light. The central part of the retina (Fovea) contains a lot of light sensitive receptors and is particularly sensitive., choroid - A dark layer of pigment that stops light from reflecting around inside the eye., optic nerve - Carries electrical impulses from the retina to the brain., suspensory ligaments - Connect the lens to the ciliary muscles.,

Strucures and Functions of the Eye

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