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Alcohol versus mechanical epithelial debridement: effect on underlying cornea before excimer laser surgery
V B Agrawal1, O E Hanuch, S Bassage
1Cornea Research Laboratory, University of Rochester, New York, USA.
Journal of Cataract and Refractive Surgery
|November 22, 1997
Summary
Isopropyl alcohol for corneal debridement did not improve excimer laser procedures. This method increased inflammation and potentially damaged corneal keratocytes, advising against its use before eye surgery.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Tissue Engineering
Background:
- Corneal debridement is a critical step in refractive surgery.
- Optimizing epithelial removal techniques is essential for successful outcomes.
- Assessing the impact of chemical agents on corneal tissue is vital.
Purpose of the Study:
- To evaluate the effects of 70% isopropyl alcohol on corneal surface smoothness.
- To assess the impact of isopropyl alcohol on stromal keratocytes.
- To determine the influence of isopropyl alcohol on epithelial removal ease.
Main Methods:
- Rabbit corneas underwent de-epithelialization mechanically or with 70% isopropyl alcohol.
- Excimer laser phototherapeutic keratectomy (PTK) was performed on some corneas.
- Corneal tissue was analyzed for surface smoothness, keratocyte loss, and inflammation.
Main Results:
- No significant difference in surface smoothness was observed between mechanical and alcohol debridement.
- Isopropyl alcohol treatment led to a significant loss of stromal keratocytes (P < .001).
- A significantly higher inflammatory response was noted in corneas treated with isopropyl alcohol (P < .001).
Conclusions:
- 70% isopropyl alcohol did not enhance excimer laser procedure quality for corneal debridement.
- Isopropyl alcohol increased corneal inflammation and may harm keratocytes.
- The study does not recommend using 70% isopropyl alcohol for corneal epithelial removal prior to excimer laser surgery.