Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
术以了泪囊和阻塞部位,以选择最佳手术适应证。
Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
术以了泪囊和阻塞部位,以选择最佳手术适应证。
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