Piezo motion-based mechanisms deliver a range of features preferred in medical engineering and life science applications, such as lubricant-free drives and sterile ceramic designs. The non-magnetic nature of ceramics is an advantageous characteristic in high-energy scanning/imaging based on strong magnetic fields. Precise motion along with incredible speed can be achieved with piezo mechanisms.
The use of optical glass for vision defect correction has been successfully carried out since medieval times. The first clinical studies exploring the use of surgical methods to “shape” the cornea were initiated in the last century | 
