Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
影以了泪囊的阻塞的部位,以选择最佳手适应证。
Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
影以了泪囊的阻塞的部位,以选择最佳手适应证。
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