ISSN 2398-2977      

Cornea: foreign body

pequis

Podcast:


Introduction

  • Cause: usually of plant origin; may directly enter cornea or via conjunctival sac.
  • Signs: usually sudden onset unilateral ocular pain plus other ocular signs referable to depth of cornea and other tissues involved.
  • Diagnosis: thorough examination of the eye is essential - often requires extra restraint and analgesia.
  • Treatment: all foreign bodies should be removed if causing ocular irritation; additional topical and systemic therapy may be required if other structures are damaged.
  • Prognosis: depends upon type of foreign body and damage to cornea and other structures.

Pathogenesis

Etiology

  • Vegetative material, eg fibrous feed material, awns, burrs, thorns, twigs.
  • Dirt, stones (especially racing animals).
  • Metal/paint flakes or sharp objects.

Pathophysiology

  • Foreign material, particularly of plant origin, can become trapped in conjunctiva   Conjunctivitis: foreign body    →   damage by lodgement on, or penetration of, the cornea.
  • Other foreign material can   →   corneal damage by direct traumatic insult.
  • Deep or full-thickness penetration may   →   severe anterior uveitis   Uveitis: anterior - overview  .

Diagnosis

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Treatment

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Outcomes

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Further Reading

Publications

Refereed papers

Can’t find what you’re looking for?

We have an ever growing content library on Vetlexicon so if you ever find we haven't covered something that you need please fill in the form below and let us know!

 
 
 
 

To show you are not a Bot please can you enter the number showing adjacent to this field

 Security code