6. the limitation of an eye is that the distance from the eye lens to the retina is always the same .How is it then possible for eye to focus images from objects lying at different distances from the eye? how is this ability affected when a person starts growing old?
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Answer:itz becoz of lack of nutrients and proteins
Explanation:when a person is old their body cant funtion normally as they were in their old days.
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The image distance in the eye, is fixed and cannot be changed. The ability of the eye lens to adjust its focal length is called accommodation. Due to this eye can increase or decrease focal length of the lens in order to see either close or distant objects.
This power of accommodation starts weakening as the person becomes older. This increases the chance of Presbyopia.
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