obstruction of nasolacrimal duct

例句：

1. 1. The patient's condition worsened after the obstruction of the nasolacrimal duct.
   患者在接受鼻泪管阻塞治疗后病情恶化。
2. 2. The doctor performed asurgery to relieve the obstruction ofthe nasolacrimal duct.
   医生进行了手术以缓解鼻泪管阻塞。
3. 3. The patient was diagnosed with a rarecondition that caused the obstruction ofthe nasolacrimal duct.
   患者被诊断出患有一种罕见病症，导致鼻泪管阻塞。