Although there are many variations of the eye chart, the standard one is the Snellen eye chart, which was developed by Dutch eye doctor Hermann Snellen in the 1860s.
In 1876, Hermann Snellen introduced a phakometer which was a similar set up to an optical bench which could measure the power and find the optical centre of a convex lens.
Hermann Göring | Hermann Hesse | Hermann von Helmholtz | Hermann Nitsch | Hermann Hauser | Hermann Bondi | Hermann Zapf | Hermann Tilke | Hermann Emil Fischer | Walther Hermann Richard Horn | Robert Hermann Schomburgk | Otto Hermann Kahn | Hermann Volrath Hilprecht | Hermann Scherchen | Hermann-Paul | Hermann Kesten | Hermann | Fallschirm-Panzer Division 1 Hermann Göring | Hermann Trophy | Hermann Oberth | Hermann Muthesius | Hermann Joseph Muller | Hermann Goetz | Hermann Cohen | Hermann and Dorothea | Snellen chart | Paul Hermann | Hermann Weyl | Hermann von Fehling | Hermann von Eichhorn |