Uncorrected cases of near-sightedness, far-sightedness and astigmatism are the leading cause of vision problems.

未及时矫正的近视，远视和散光是视觉问题的主要诱因。

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Uncorrected cases of near-sightedness, far-sightedness and astigmatism are the leading cause of vision problems.

未及时矫正的近视，远视和散光是视觉问题的主要诱因。

youdao