keratomileusis /ˌkɛɹətəʊmaɪˈl(j)uːsɪs/ noun1 •Improvement of the refractive state of the cornea, performed by cutting a thin hinged flap in the front surface of the eye and lifting it to access the cornea.The most popular form of laser eye surgery is "laser-assisted in-situ keratomileusis," or Lasik for short. More than 85% of laser eye surgery patients in Europe and the US opt for it. — 2006 formskeratomileuses