Objective To observe the effects of superioris muscle on treating moderate and severe congenital ptosis.

目的探讨应用提上睑肌缩短术治疗中重度先天性上睑下垂的效果.

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Of the extrinsic muscles, the levator labii superioris alaeque nasi is the most important dilator.

鼻外肌群中, 提上唇肌是最重要的扩张肌.

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