Thanks to the advances in technology, known as the Wavefront vision mapping, we can measure and address visual disorders that previously could not even be detected.

Wavefront maps are plotted by passing a narrow ray of eye-safe light through the optical system and measuring the optical distortions as the light exits the eye. These patterns, called aberrations, are then compared with the flat wavefront maps associated with normal vision.
The result is Custom Laser Vision Correction, a new level of precision and accuracy never before possible.