A system for photoablating a photoablatable substrate (such as the cornea of a human eye) to create a rounded work surface includes a curved, hollow mirror for reflecting light capable of photoablating such surfaces. The curvature of the mirror determines the shape and curvature of the rounded work surface...http://www.google.se/patents/US5141506?utm_source=gb-gplus-sharePatent US5141506 - Systems and methods for creating substrate surfaces by photoablation
