Lapis ISSN 2398-2969

Nasolacrimal cannulation

Synonym(s): Tear duct flushing

Contributor(s): Richard Saunders, David L Williams, Allan Muir

Introduction

Uses

  • Used both as a diagnostic test and a therapeutic flush for dacryocystitis Eye: dacryocystitis cases.

Advantages

  • Shows directly whether purulent material can be expressed from the nasolacrimal punctum during flushing.
  • Shows if duct is patent.
  • Allows for flush analysis in dacryocystitis cases, eg culture and sensitivity/cytology.
  • Act of flushing debris from the nasolacrimal canal can improve the clinical outcome of many dacryocystitis cases.

Disadvantages

  • Can be difficult to cannulate duct when florid conjunctivitis is also occurring.
  • Rupture of the canal is possible with over-zealous technique.

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Prognosis

  • Several nasolacrimal flushings may be required in dacryocystitis Eye: dacryocystitis cases and those with an underlying dental disease.
  • Cure may not be possible if duct is permanently damaged by scar tissue or incisor cheek tooth apices obstruct the duct.

Further Reading

Publications

Refereed papers

Other sources of information

  • Saunders R (2013) Dental-related epiphora and dacryocystitis. In: BSAVA Manual of Rabbit Surgery, Dentistry and Imaging. Eds: Harcourt-Brown F & Chitty J. BSAVA, Gloucester, UK. pp 382-394.


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