The human eye can change the focal length of its lens. Which part of the eye is responsible for this? How does the changing focal length help us?
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The focal length of the eye-lens is changed by the action of the ciliary muscles. The ciliary muscles can change the thickness of the eye-lens and hence its focal length changes the converging power of the eye-lens.
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the human eye forms the image of an object as its retina . Of the eye lens . The change in curvature of eye lens changes the focal length of the eyes . Hence , the change in focal length of an eye lens is caused by the action of ciliary muscle.
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