Roland V. Shack, professor emeritus of optical sciences at the University of Arizona Optical Sciences Center, has received 2004 Gold Medal from The International Society for Optical Engineering (SPIE) for his contributions to image formation, aberration theory, optical testing, light scattering, microscopy and astronomical optics, for his teaching and mentoring of optics students and for his inventions, including the Shack-Hartmann sensor and the Shack cube interferometer. 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