Obstruction of nasolacrimal drainage apparatus

Last revised by Dr Jeremy Jones on 14 Sep 2021

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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Cases and figures

  • Case 1: post-saccular NLD obstruction
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  • Case 2: treated with Lester Jones tube
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