An eye can focus the image of distant objects as well as nearby objects on its retina by changing its focal length. The contraction of the ciliary muscles decreases the focal length and relaxation of these ciliary muscles increases the focal length of the eye lens.
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An eye can focus the image of distant objects as well as nearby objects on its retina by changing its focal length. The contraction of the ciliary muscles decreases the focal length and relaxation of these ciliary muscles increases the focal length of the eye lens.
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