Felis ISSN 2398-2950

Symblepharon

Contributor(s): Dennis E Brooks, David Williams

Introduction

  • Adhesion of conjunctival tissue to either another conjunctival surface or to the cornea.
  • Cause: most common as a sequel to feline herpesvirus Rhinitis.
  • Also can be congenital but more commonly secondary to severe corneal and conjunctival loss or injury (especially chemical), or iatrogenic following eyelid surgery.
  • Signs: asymptomatic, reduced vision, ocular pain.
  • Diagnosis: history, clinical signs, ophthalmic examination.
  • Treatment: surgical if the condition is severe but re-adhesions complicate the repair.
  • Prognosis: depends on severity.

Pathogenesis

Etiology

  • Previous inflammation, especially from feline herpes virus (FHV-1) infection Cornea: herpesvirus keratitis.
  • Eyelid/conjunctival injury, especially chemical.
  • Abscessation of eyelid.
  • Iatrogenic - previous eyelid surgery.
  • Congenital.

Predisposing factors

General

  • Previous feline respiratory disease.
  • Chemical injury to the eye.
  • Previous surgery involving the conjunctiva.
  • Eyelid abscessation.

Pathophysiology

  • Adhesions of conjunctival tissue (palpebral, bulbar or nictitating) to another conjunctival surface or to the cornea   →   reduced eyelid mobility   →   exposure keratopathy and/or impaired vision .

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

Other sources of information

  • Roper-Hall M J (1989) The eyelids and reconstructive (plastic) surgery. In: Eye Surgery. 7th edn. Ed. Stallard. London: Wright, p 64.
  • Petersen-Jones S & Crispin S (2002) BSAVA Manual of Small Animal Ophthalmology. 2nd edn. British Small Animal Veterinary Association. ISBN 0 905214 54 4


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