Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
前影以了泪囊大小和阻塞部位,以选择最手适应证。
Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
前影以了泪囊大小和阻塞部位,以选择最手适应证。
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