Conductive keratoplasty, or CK, is a type of refractive surgery that uses mild heat from radio waves to shrink the glue-like connective tissue called collagen in the periphery of the cornea. This steepens the cornea, giving farsighted patients with presbyopia better near and distant vision while improving near vision for patients with presbyopia alone.
If you are nearsighted, CK is not for you — at least not at this time — although expanded indications, such as for astigmatism correction, are being studied.
With CK some corneas have a tendency to revert to their original states and vision correction fails to remain stable. Long-term data ultimately will determine whether CK’s results will be comparable to other vision correction procedures.