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An exophthalmometer is an instrument used for measuring the degree of forward displacement of the eye in exophthalmos. The device allows measurement of the forward distance of the lateral orbital rim to the front of the cornea. [ 1 ]
After the First World War, Hertel moved to Berlin before leaving for the University of Leipzig in 1920, where he remained until his retirement in 1935. Hertel invented the Hertel exophthalmometer, a method of measuring eye displacement. With his colleague, Jakob Stilling, he developed the Stilling-Hertel test for colour vision deficiency.
Measurement of the degree of exophthalmos is performed using an exophthalmometer. Most sources define exophthalmos/proptosis as a protrusion of the globe greater than 18 mm. [ 1 ] The term exophthalmos is often used when describing proptosis associated with Graves' disease .
Hertel & Reuss was a manufacturer of optical instruments based in Kassel, Germany, which emerged around 1995 following the bankruptcy of its predecessor company (founded in 1927 by Otto Hertel and Eduard Reuss.) The owners of Hertel & Reuss KG were Herr Eduard Reuss and his two sons Herr Gerhard Reuss and Herr Helmut Reuss.
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The Deutsches Optisches Museum Jena is a science and technology museum displaying optical instruments from eight centuries. It gives a technical and cultural-historical survey of the development of optical instruments.
Curtis Hertel Jr. (born January 9, 1978) is an American politician who served as a state senator from 2015 to 2023, for the 23rd district in Michigan, representing the Greater Lansing Area. [1] Hertel is a Zionist member of the Democratic Party.
Kevin Hertel (born May 1985) is an American Democratic politician who has represented Michigan's 12th Senate district since January 2023. [1] Prior to being elected to the Michigan Senate , Hertel represented the 18th district in the Michigan House of Representatives from 2017 to 2022.