Home Search

Cornea & External Diseases





















Corneal foreign body: a minute piece of glass is embeeded on the anterior cornea. There is no evidence of penetrating injury.

  • Frequently occurs during grinding and drilling steel without wearing protective goggles.
  • Clinical features:
    • Symptoms: foreign body sensation, continuous irritation or ocular pain.
    • Signs:
      • Variety of objects may accidentally be lodged superficially or embedded deep within the cornea
      • Vertical corneal abrasions give clues about upper tarsal embedded foreign bodies
      • Metallic foreign bodies often leave rust rings in the surrounding cornea.
  • Management:
    • Careful examination of the entire eye to rule out intraocular foreign bodies.
    • CT-scanning or MRI (contraindicated when metallic foreign body is suspected).
    • Superficial foreign bodies may simply be removed at the slit lamp after instillation of a topical anesthetic using a moist cotton-tipped applicator of fine gauge needle.
    • Irrigation is occasionally done to dislodge multiple particles or small fragments.
    • Superior tarsal conjunctiva has to be carefully examined, as it is a common location for a hidden foreign body.
    • Deeply embedded foreign bodies may be removed with forceps.
    • If perforation is suspected, the removal should be done in the OR.
    • Every foreign body should be removed unless removal may cause greater damage than allowing it to stay undisturbed.
  • Medical therapy:
    • Topical antibiotics after foreign body removal.
    • Topical non-steroidal anti inflammatories such as ketorolac 0.5% and a short acting cycloplegic for marked ocular discomfort or inflammation and for relief of symptoms.

Copyright © 2003 Digital Reference of Ophthalmology. All rights reserved. All material published on this website is the property of Digital Reference of Ophthalmology and cannot be duplicated without permission.
Home Search Home Search