Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
术前造影了解泪囊大小和阻位,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.
术前造影了解泪囊大小和阻位,选择最佳手术适应证。
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