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Role of autologous serum in persistent epithelial defects
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Poon et al1 in their excellent article have reiterated the efficacy of autologous serum in the treatment of persistent epithelial defects (PEDs) of the cornea. We would like to invite the attention of the authors to certain aspects of the study.
The authors have considered a period of 1 week for labelling an epithelial defect to be persistent. However, most studies on a similar subject have taken …