Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
术前造影以了
泪囊
大小和

部位,以选择最佳手术适应证。
成品Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
术前造影以了
泪囊
大小和

部位,以选择最佳手术适应证。
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