<prompt> The wavelength of laser in nanometers for shaping cornea in refractive surgery is -193 nm451 nm532 nm1064 nm  <response>: Corneal Reshaping precedures such as Photorefractive keratectomy PRK and Laser Assisted in Situ Keratomileusis LASIK are performed by lasers in the ultraviolet wavelength of 193 nm to 213 nm. The most commonly used laster for such procedures is the Argon Fluride Excimer Laser ArF with a length of 193 nm. 