Is the actual LASIK part performed the same way? Or is Custom LASIK a completely different procedure?

The actual LASIK procedure is performed exactly the same way in both Conventional LASIK and Custom LASIK. However the pre-operative testing for Custom LASIK links the data from your pre-operative scan directly to the lasers. The wavefront analyser used with Custom LASIK brings a new level of knowledge and accuracy to the surgeon, giving a more precise and personalised result.