write the function of all parts of eye
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The eye has many parts that must work together to produce clear vision: The sclera, or white part of the eye, protects the eyeball. The pupil, or black dot at the centre of the eye, is an opening through which light can enter the eye. The iris, or coloured part of the eye, surrounds the pupil.
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The parts of an eye are:
Sclera: It is the outer covering of an eye. Also known as the White part of the eye.
Cornea: It is the part of the Sclera which is transparent. It protects the eye.
Iris: Behind the cornea it is a coloured diaphragm. It gives the eye it's characteristic colour.
Pupil: It is the hole in the centre of the Iris. It is an opening through which light can enter in the eye.
Retina: The image of the object in front of the eye is formed on the Retina, which acts like a screen.
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