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Occult Perforating Corneal Injury from Mechanical Pencil Graphite
Summary
A graphite pencil lead caused unique penetrating eye trauma in a child. Prompt surgical repair of the corneal injury and cataract extraction led to good visual recovery.
Area of Science:
- Ophthalmology
- Trauma Surgery
Background:
- Mechanical pencil injuries to the eye are uncommon.
- Graphite lead foreign bodies present unique challenges in diagnosis and management.
Purpose of the Study:
- To describe a unique case of penetrating eye trauma from a mechanical pencil.
- To elucidate the proposed mechanism of injury and surgical management.
Main Methods:
- Case report of an 11-year-old boy with a mechanical pencil eye injury.
- Surgical removal of a retained graphite foreign body.
- Corneal laceration repair and cataract extraction.
Main Results:
- Initial examination suggested partial-thickness corneal injury, but revealed a full-thickness defect after foreign body removal.
- The proposed mechanism involved initial penetration, retraction, and stromal reentry.
- Postoperative uncorrected visual acuity of 20/40 was achieved.
Conclusions:
- Mechanical pencil injuries represent a distinct form of penetrating ocular trauma.
- Early intervention including foreign body removal and surgical repair is crucial for visual outcomes.
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