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Updated: May 17, 2026
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Corneal Epithelial Abrasion with Ocular Burr As a Model for Cornea Wound Healing
Published on: July 10, 2018
Ectopic epithelial implants following surface ablation of the cornea
Daniel J Gibson1, Gregory S Schultz
1Institute for Wound Research, University of Florida, Gainesville, Florida 32610-0294, USA. gibsondj@ufl.edu
Investigative Ophthalmology & Visual Science
|November 8, 2012
Summary
Epithelial cells can invade the corneal stroma after phototherapeutic keratectomy, leading to complications. This study shows epithelial ingrowth following surface ablation, offering insights into improving surgical outcomes.
Area of Science:
- Ophthalmology
- Regenerative Medicine
- Cell Biology
Background:
- Corneal complications can arise from refractive surgery.
- Understanding epithelial behavior post-surgery is crucial for improving patient outcomes.
Purpose of the Study:
- To investigate the direct contribution of the corneal epithelium to post-surgical complications.
- To determine if epithelium-derived cells persist in the stroma after phototherapeutic keratectomy (PTK).
Main Methods:
- Utilized a mouse model with genetically labeled epithelium to track cell persistence.
- Analyzed gross histology and macrophotography of excimer-ablated rabbit corneas for epithelial ingrowth.
Main Results:
- Epithelium-derived cells were observed in the wounded stroma one month post-surgery.
- Evidence of epithelial invasion into the stroma was found within the first four days of healing.
- Epithelial ingrowth led to stromal tissue delamination and irregular corneal surfaces.
Conclusions:
- Ectopic epithelia, a known LASIK complication, also occur after surface ablation techniques like PTK.
- This finding provides new understanding of the biological response to surface ablation.
- Suggests potential for new research to enhance clinical outcomes for patients unsuitable for LASIK.
