Canis ISSN: 2398-2942

Eye: ocular foreign body

Contributor(s): Dennis E Brooks, Keith Barnett, David L Williams

Introduction

  • Foreign bodies can be both extra and intraocular.
  • Cause: presence of foreign body in eye.
  • Signs: usually uniocular, can be acute with hyperemia and pain; chronic cases have purulent discharge.
  • Diagnosis: history, clinical signs, ophthalmological examination.
  • Treatment: removal of extraocular foreign body; intraocular foreign bodies are possibly best leftin situunless organic.
  • Prognosis: usually good if foreign body is extraocular and is identified early and removed.

Pathogenesis

Etiology

  • Usually FB is plant material or thorn and should always be removed in these cases.
  • Metal FB and animal quills are other types.

Predisposing factors

General
  • Brachycephalic breeds.

Pathophysiology

  • Foreign body in cornea → reflex uveitis if left and focal keratitis with ulceration (not always ulceration).
  • If foreign body penetrates globe may stimulate severe uveitis.
  • If FB penetrates lens, a cataract can occur or lens capsule rupture with phacolytic uveitis and subsequent glaucoma.
  • FB in vitreous may be associated with vitreal hemorrhage and/or retinal detachment.

Timecourse

  • Usually acute onset signs.
  • Foreign body may be present for some 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


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