Corneal topography in modern refractive surgery

Corneal topographic analysis has been instrumental in the development of modern refractive surgical procedures. Better methods to attain centration, larger diameter treatment zones, smoother, wider transition zones, and reduction in the amount of induced irregular astigmatism have resulted from the findings of corneal topography analysis. Stability of corneal topography after refractive surgery can be directly and objectively determined with corneal topographers. Several factors, including varifocality of corneal topography, contribute to better-than-expected near visual function, particularly after hyperopic refractive surgery. As methods evolve, the bar for success rises accordingly toward procedures that are safer and more efficacious.