What does this mean for Corneal Topography?

Topographic analysis of the corneal front and back surfaces is based on the true elevation measurement from limbus to limbus. Comparison of pre-op and post-op topographies is easy. Both corneal surfaces can be selected for analysis in axial (sagittal) , tangential or elevation representation modes.

Is corneal pachymetry measured as well?

The corneal thickness is displayed as a color image, showing the entire area from limbus to limbus. Corneal pachymetry is vital for LASIK and other forms of refractive surgery. An accurate measurement is required for precise treatment.