The vision of Helmholtz

Hermann Ludwig Ferdinand von Helmholtz (1821–1894) began investigating vision at a time when its study was undergoing revolution. Laboratory experiments were augmenting the long history of naturalistic observations. Instruments stimulus control enabled manipulation and space in ways that had not been possible previously, added to their tally. Vision central issue his early years as an academic, bicentenary birth is here celebrated visually. Much research on described Handbuch der physiologischen Optik, which translated into English mark centenary birth. The examined, together with illustrating highlights from it. Helmholtz’s contributions understanding eye optical instrument, sensations vision, perception expressed three parts Handbuch, became volumes Treatise Physiological Optics.