目的：探讨先天性鼻泪管阻塞部位，预防鼻泪管长期阻塞的并发症，防止永久性狭窄。
Objective: To search the localization of obstruction in lacrimal passage with congenital obstruction of nasolacrimal duct and prevent the complication of long-term obstruction and permanent stenosis.
目的：探讨先天性鼻泪管阻塞部位，预防鼻泪管长期阻塞的并发症，防止永久性狭窄。
Objective: To search the localization of obstruction in lacrimal passage with congenital obstruction of nasolacrimal duct and prevent the complication of long-term obstruction and permanent stenosis.
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