Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
术前造影
了解泪囊的大小
的部位，选择最佳手术适应证。
型,压片Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
术前造影了解泪囊的大小的部位，选择最佳手术适应证。
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