最終更新日：2022/12/24
These experiments prove that some alteration has taken place in the eye equivalent to a lengthening of the eye, or a shortening of the principal focus, which enables presbyopics to read without glasses.
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These experiments prove that some alteration has taken place in the eye equivalent to a lengthening of the eye, or a shortening of the principal focus, which enables presbyopics to read without glasses.
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