- Frequently occurs during grinding and drilling steel without wearing
- Clinical features:
- Symptoms: foreign body sensation, continuous irritation or
- 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
- Careful examination of the entire eye to rule out intraocular
- CT-scanning or MRI (contraindicated when metallic foreign body
- 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
- 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.