Corneal Waveform technology is the technology used in the newer generation pachymeters to capture an echogram scan of the cornea. Pachymeters traditionally provide the thickness of the human cornea in form of a number that is displayed to the user. The new generation of pachymeters give the user the ability to display, store, recall, analyze and superimpose corneal waveforms. The advantage of this over conventional pachymetry is that the user is able to more accurately measure the corneal thickness, measure changes in corneal thickness over time, and measure structures within the cornea such as micro bubbles that are generated by the femtosecond laser during LASIK eye surgery.