In LASEK (laser epithelial keratomileusis), the surface cornea layer is treated with alcohol and then peeled back to permit reshaping of the underlying layer.

• 在LASEK（准分子激光上皮瓣下角膜磨镶术）手术中，用酒精处理角膜上皮层，然后剥离角膜上皮后对上皮下组织进行处理。