You can customize lenses, play a more active role in managing cataract and refractive surgery patients and more with the HRK-8000A. The HRK-8000A combines the features of an auto refractor, auto keratometer, and wavefront aberrometer into one, high-tech instrument. The HRK-8000A generates a Hartmann-Shack based Zernike wavefront map that details the refractive errors as well as the lower- and higher-order aberrations. The HRK-8000A also features point spread function, image simulation and the world’s first contact lens fitting function ever to be made available in an autorefractor/keratometer.