Felis ISSN 2398-2950

Eye: ocular foreign body

Contributor(s): Dennis E Brooks

Introduction

  • Common condition in cats.
  • Cause: both extraocular and intraocular foreign bodies together with malicious injuries, eg airgun pellet.
  • Signs: usually unilateral, blepharospasm, ocular discharge.
  • Diagnosis: history, clinical signs, ophthalmological examination.
  • Treatment: removal of foreign body.
  • Prognosis: usually good if identified early and removed.

Pathogenesis

Etiology

  • Varied.
  • Foreign body is usually plant material or thorn.

Specific

  • If foreign body penetrates globe may lead to uveitis, corneal edema and subsequent glaucoma.

Pathophysiology

  • Foreign body in cornea   →   reflex uveitis, focal keratitis and may cause ulceration.

Timecourse

  • Usually acute onset signs.
  • Signs may be present for a long period of time before presented by owner.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

Other sources of information

  • Barnett K C & Crispin S M (1998) Feline Ophthalmology - an atlas and text. W B Saunders & Co Ltd.
  • 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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