Short for laser epithelial keratomilesis, this is a variant of PRK. LASEK surgery is used to treat nearsightedness, farsightedness and astigmatism. An epithelial flap is created and epithelial cells are loosened using an alcohol solution. A laser is used to reshape the cornea, then the flap is replaced and secured with a soft contact lens while it heals. There are many other types of Laser Refractive Surgery – the ophthalmologist will advise which surgery is optimal for each patient.