draw a labelled diagram of the unclus write the functions of each part.
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Explanation:
structure of human eye
Cornea - it acts as a protective layer for the eye
Aquous humor - it acts as a lubricant for the eye ball
Iris -it gives characteristic eye color to the person.
Optic nerve-it is responsible for the adjustment of the focal length.
Pupil- when light enters into the pupil, it contracts. In dark areas the pupil enlarges. It is this self - adjustment of the pupil, which protects the eye from excessive light or in dim light.
Retina - it acts as a screen for the eye. The image is formed on retina.
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