But there was significant difference in the average annual reduction of hypermetropia among the groups of low, middle and high powers of hypermetropia.

轻度、中度、高度远视眼，远视平均每年降低的幅度比较，差异有高度显著性。

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But there was significant difference in the average annual reduction of hypermetropia among the groups of low, middle and high powers of hypermetropia.

轻度、中度、高度远视眼，远视平均每年降低的幅度比较，差异有高度显著性。

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