Efficacy of amniotic membrane patching for acute chemical and thermal ocular burns

Pinnita Prabhasawat, Nattaporn Tesavibul, Nauljira Prakairungthong, Wipawee Booranapong
Journal of the Medical Association of Thailand 2007, 90 (2): 319-26

OBJECTIVE: To study the efficacy of amniotic membrane patching (AMP) for acute chemical and thermal ocular burns and compare the results with a control group.

MATERIAL AND METHOD: Fifteen patients (21 eyes) with acute ocular burn severity grading of II to IV were retrospectively reviewed. Thirteen eyes were treated with preserved AMP while eight eyes were treated with conventional treatment. Outcomes and complications were evaluated and compared between eyes in the AMP group and the control group with the same severity of burn.

RESULTS: In the AMP group, the mean age was 36.9 +/- 11.7 years (range, 20-58). The mean follow-up time was 8.0 +/- 6.8 months (range, 1-20). Complete epithelialization was achieved in 69.2% (9/13 eyes) in total, 100% (5/5 eyes), 100% (3/3 eyes) and 20% (1/5 eyes) in grade II, III and IV respectively. Mean epithelial healing time in the AMP group was 10.4 +/- 5.8 days (range, 4-20). Comparison of grade 2 and 3 burns showed that the AMP group in which patching was performed within 5 days resulted in faster epithelial healing, less corneal haze and limbal deficiency than in the group in which patching was performed after 5 days, and the control group (mean epithelial defect 7.0 +/- 2.0, 19.5 +/- 0.7, 9.9 +/- 10.8 days respectively).

CONCLUSION: Adjunctive treatment of ocular burns with AMP promoted rapid epithelial healing and reduced corneal complication. Surgery performed in the early stage tended to yield a better outcome.

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