Corneal epithelial remodeling after corneal refractive surgery has been proven as a significant factor in determining the outcomes of corneal refractive surgery.  The majority of studies have noted that increased epithelial thickness happened after myopic procedures. Accurate measurements of the epithelial thickness, such as by very high-frequency digital ultrasound, invivo confocal microscopy, anterior segment OCT,  can be helpful to observe the distribution of corneal epithelial thickness and its changes,   after keratorefractive surgery, and to   provide important information for  remodeling after corneal refractive surgery and  accuracy of refractive corneal.