Obstruction of nasolacrimal drainage apparatus

Obstruction of nasolacrimal drainage apparatus results in epiphora and can be primary or secondary, congenital or acquired. Obstruction can occur at canalicular, lacrimal saccular, or nasolacrimal ductal (post-saccular) levels.

Causes of obstruction

Congenital obstruction
Acquired obstruction
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Article information

rID: 43890
System: Head & Neck
Section: Gamuts
Tag: cases, ref
Synonyms or Alternate Spellings:
  • Nasolacrimal drainage apparatus obstruction

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Cases and figures

  • Case 1: post-saccular NLD obstruction
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