The wavelength of laser (in nanometers) for shaping cornea in refractive surgery is -

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.