In this paper an extension of the principle of the Hartmann-Shack
wavefront sensor to the neasureirtent of the sphericity of a specular
reflection surface is presented. The features of this widely usable
system are discussed by means of the application of this approach
to the modeling of surface aberrations of the cornea of the eye.
The results of measurements performed with a first prototype on a
set of stainless steel calibration spheres of different radii are
shown.© (1991) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.