Treatment really depends on the severity of the Keratoconus. All surgical options will still require some sort of refractive correction after the procedure, in the form of eyeglasses or contact lenses.
If the Keratoconus is stable and unchanging (non-progressing or "form fruste"), then excellent vision can be achieved with the appropriate contact lenses and routine monitoring.
If the Keratoconus is advancing, it is best to intervene surgically to arrest the progression of the condition. These options include INTACs corneal rings, and Corneal Crosslinking.
If the Keratoconus is very advanced and INTACs and Corneal Crosslinking are no longer an option, a Corneal Transplant is the only remaining option.