If want to preserve the border, military enhancement is the prerequisite.

若想边界得以保全，军力的增强乃是先决条件。

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In one case, the enhancement was confined to the right optic nerve, extending to the prechiasmal border without any other parenchymal involvement (Fig 8).

其中1例患者，强化病灶局限于右侧视神经且延伸至视交叉前缘，其它部位均为受累（图8）。

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