what happens if the focal length of eye lens is beyond the range of 2.5 cm 2.27 cm ?
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The maximum and minimum focal lengths of eye lenses are 2.5 cm and 2.27 cm respectively. ... Biconvex lens is used to correct the defect of hypermetropia. Presbyopia is vision defect. This happens due to gradual weakening of ciliary muscles.
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This is the question of Physics not an English
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