Canis ISSN: 2398-2942

Eyelid: lateral canthotomy

Contributor(s): Natasha Mitchell

Introduction

  • Lateral canthotomy temporarily increases the size of the palpebral fissure.
  • This facililtates carrying out surgical procedures, eg keratectomy, corneal grafting and cataract surgery that require improved access to the globe.
  • It is useful in dolichocephalic and some mesocephalic breeds of dog, but is not usually necessary in brachycephalic breeds where the globe is prominent.

Uses

  • Increase exposure of globe, allowing better access.
  • Facilitates replacement of prolapsed globe Proptosis / prolapse orbit / globe , which is trapped in front of spasming eyelids.
  • Corneal surgery, including keratectomy Cornea: superficial keratectomy , conjunctival pedicle grafts and corneo-conjunctival transposition.
  • Cataract surgery.

Advantages

  • Simple to perform.
  • No specialist equipment required.

Requirements

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Preparation

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Procedure

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Aftercare

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Further Reading

Publications

Refereed papers

Other sources of information

  • Maggs D J, Miller P E & Ofri R (2013)Fundamentals of Veterinary Ophthalmology.5th edn, pp 387-388.
  • Gelatt K N & Gelatt K P (2011)Veterinary Ophthalmic Surgery.pp 98.


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