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Ultrastructural study of a corneal keloid
1Research Centre, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
Eye (London, England)
|January 1, 1993
Summary
A corneal keloid, a rare overgrowth after injury, was surgically removed and analyzed. Microscopic examination revealed disorganized tissue with various fibroblast types and cellular changes, offering insights into keloid formation.
Area of Science:
- Ophthalmology
- Pathology
- Cell Biology
Background:
- Corneal keloids are rare, abnormal growths of scar tissue that can develop after ocular injury.
- Understanding the cellular and stromal characteristics of corneal keloids is crucial for effective treatment and management.
Observation:
- A 69-year-old male presented with a corneal keloid following a fingernail injury.
- The keloid was surgically excised via superficial lamellar keratectomy and subjected to detailed microscopic analysis.
Findings:
- Histological examination showed a disorganized connective tissue stroma with anterior atrophy and posterior vascularization.
- The epithelium was thin, oedematous, and non-keratinized, with cells exhibiting myoblastic differentiation.
- Multiple fibroblast ultrastructural forms, including myofibroblasts, fibrocytes, and glycogen-rich cells, were identified within the stroma.
Implications:
- This case highlights the complex cellular composition of corneal keloids, involving diverse fibroblast phenotypes.
- The presence of myofibroblasts suggests an active role in scar tissue contracture and overgrowth.
- Further research into these cellular mechanisms could lead to novel therapeutic strategies for managing corneal keloid formation.