Safety and efficacy of Photorefractive Keratectomy (PRK) for myopia using a new corneal epithelium debridement technique (original) (raw)

2015

Abstract

PURPOSE: To evaluate the clinical outcomes of photoreactive keratectomy (PRK) for myopia, using a new combined, ethanol-assisted and blunt mechanical corneal epithelial peeling technique. METHODS: In this prospective cases series, PRK was performed in myopic patients. A circular cellulose cell sponge soaked with 20% ethanol solution was positioned over the central cornea for 50 seconds. The adhesions between the epithelium and corneal stroma were loosened using a Weck-Cel spear, and finally, central loosened corneal epithelium was easily lifted off in a circular epitheliorhexis-like technique. Corneal photoablation was then performed using the usual nomograms and protocols for myopic surface photoablation treatments. Manifest refraction, uncorrected distance visual acuity (UDVA), and corrected distance visual acuity (CDVA) were evaluated preoperatively and postoperatively, and adverse effects were also assessed. RESULTS: The study enrolled 248 eyes of 144 consecutive patients. Mean ...

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