Corneal Foreign Body
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Basics
Description
- Foreign material on or in the corneal epithelium
- Corneal epithelium disrupted:
- Abrasion if only epithelium disrupted
- Scar if deeper layers of cornea involved
Etiology
- Foreign material causes inflammatory reaction:
- May develop conjunctivitis, corneal edema, iritis, necrosis
- Poorly tolerated:
- Organic material (plant material, insect parts)
- Inorganic material that oxidizes (iron, copper)
- Well tolerated:
- Inert objects (paint, glass, plastic, fiberglass, nonoxidizing metals)
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Basics
Description
- Foreign material on or in the corneal epithelium
- Corneal epithelium disrupted:
- Abrasion if only epithelium disrupted
- Scar if deeper layers of cornea involved
Etiology
- Foreign material causes inflammatory reaction:
- May develop conjunctivitis, corneal edema, iritis, necrosis
- Poorly tolerated:
- Organic material (plant material, insect parts)
- Inorganic material that oxidizes (iron, copper)
- Well tolerated:
- Inert objects (paint, glass, plastic, fiberglass, nonoxidizing metals)
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