Canis ISSN: 2398-2942

Combined entropion / ectropion

Synonym(s): Diamond eye

Introduction

  • Cause: macropalpebral fissure Macropalpebral fissure and a weak lateral canthal ligament.
  • Signs: the middle of the lower lid is everted (ectropion) and, in severe examples, the lateral lower and upper lids are inverted (entropion) giving rise to a 'diamond eye' configuration.
  • Diagnosis: breed, clinical signs.
  • Treatment: surgical - a modified canthoplasty.
  • Prognosis:good.

Pathogenesis

Etiology

  • Congenital.
  • Macropalpebral fissure plus weak lateral canthal ligament.

Pathophysiology

  • Macropalpebral fissure Macropalpebral fissure (overlarge eyelid opening) and a weak lateral canthal ligament → laxity of the eyelids → ectropion Ectropion of the middle lower lid and in some cases, lateral entropion Entropion
  • Altered eyelid conformation → entropion → corneal irritation → corneal ulceration Ulcerative keratitis.
  • Altered eyelid conformation → lagophthalmos → exposure keratitis Keratitis.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Bedford P G C (1988) Conditions of the eyelids in the dog. JSAP 29 (7), 416-428 VetMedResource.
  • Wyman M (1971) Lateral canthoplasty. JAAHA 7, 196.


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