Comparison of corneal wound-healing response in photorefractive keratectomy and laser-assisted subepithelial keratectomy

At higher attempted corrections, LASEK-treated eyes showed less keratocyte apoptosis, myofibroblast transformation, and up-regulation in the synthesis of chondroitin sulfate than PRK-treated eyes. These differences may account for better visual acuities and less stromal haze in higher attempted corrections in LASEK-treated eyes.