If we compare laser surgery to clothing, standard/conventional treatment would be akin to buying a garment off the rack. The Custom treatment would be like having a tailor made garment. With Laser Vision Correction the primary difference between Conventional/Standard and Customized treatment is the mapping system that guides the laser. Because the surface of each individual’s eyes is unique and different, Standard LASIK map system does not detect those variations. Customized LASIK uses a more detailed analysis to recognize and treat these subtle irregularities.