Biography Center : Biographies Of Allvar Gullstrand In Biographies of Gullstrand Allvar and, for more detail Biography of , , www.nobel.se/medicine/laureates/1911/index.html, http://www.biography-center.com/biographies/1303-Gullstrand_Allvar.html
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Allvar Gullstrand - MSN Encarta Gullstrand, Allvar (18621930), Swedish ophthalmologist and Nobel Prize winner. For his important advances in describing the structure and function http://ca.encarta.msn.com/encyclopedia_761582570/gullstrand_allvar.html
Extractions: var s_account="msnportalencartacaen"; Home Hotmail Spaces Video ... more Hotmail Messenger My Page Sympatico Mail Autos Careers Classifieds Entertainment ... More Reference Thesaurus Translation Multimedia Other Resources Top-10 List Language Help Products Guides ... Help Related Items more... Encarta Search Search Encarta about Allvar Gullstrand Advertisement Encyclopedia Article Find Print E-mail Multimedia 1 item Allvar Gullstrand (1862-1930), Swedish ophthalmologist and Nobel Prize winner. For his important advances in describing the structure and function of the human eye , Gullstrand was awarded the Nobel Prize in physiology or medicine in 1911. Gullstrand was born in Landskrona, and in 1888, while attending the Karolinska Institute in Stockholm, passed all necessary course work and examinations to qualify to practice medicine. Two years later, specializing in ophthalmology, he received a Ph.D. from the same institution. Gullstrand then served as chief physician at the Stockholm Eye Clinic and lectured in ophthalmology at the Karolinksa Institute. In 1894 he moved to the University of Uppsala, where he remained until his retirement in 1927. Gullstrand's early research, presented in his doctoral thesis, concerned an eye disorder known as astigmatism. In this condition, vision is blurred because one of the structures inside the eye, such as the cornea or the lens, is not curved properly and does not correctly focus light waves on the retina at the back of the eye. In his later research, Gullstrand used complex mathematical calculations to determine how the eye focuses on objects both near and far. In particular, he studied how an intricate network of muscles and ligaments makes changes in the shape of the eye's lens in order to focus on objects. For example, to focus on a nearby object, the lens becomes convex in shapeâthat is, curving outward. To focus on objects far away, the lens changes to a concave shapeâcurving inward. The process by which the lens changes shape is known as
Gullstrand, Allvar - MSN Encarta Translate this page Gullstrand, Allvar (Landskrona 1862 - Stoccolma 1930), oftalmologo svedese. Si laureò in medicina nel 1888 presso il Karolinska Institutet di http://it.encarta.msn.com/encyclopedia_761582570/Gullstrand_Allvar.html
Gullstrand, Allvar - MSN Encarta Translate this page Gullstrand, Allvar (1862-1930), schwedischer Augenarzt und Nobelpreisträger. http://de.encarta.msn.com/encyclopedia_721550733/Gullstrand_Allvar.html
Extractions: var s_account="msnportalencartade"; MSN Home Hotmail My MSN Anmelden ... Mehr⦠Hotmail Messenger Blogs/Spaces My MSN Auto Fernsehprogramm Fuball Gebrauchtwagen ... Mehr Weitere Nachschlagewerke bersetzungen Multimedia Andere Ressourcen Encarta weltweit Stundentipps Webcenter Quellentexte ... Hilfe Suche in Encarta In Encarta suchen nach Gullstrand, Allvar Enzyklop¤dieartikel In diesem Artikel suchen Druckerfreundliche Version der Seite Versenden Multimedia 1 Objekt Gullstrand, Allvar (1862-1930), schwedischer Augenarzt und Nobelpreistr¤ger. Gullstrand wurde am 5. Juni 1862 im schwedischen Landskrona geboren. Er studierte technische und medizinische Wissenschaften in Uppsala Wien und Stockholm . Auf seiner Doktorarbeit ¼ber Astigmatismus (1890) und Helmholtzâ Theorien aufbauend, entwickelte er seine Theorie der physiologischen Optik . 1894 bis 1913 war er Ordinarius f¼r Augenheilkunde der Universit¤t Uppsala, 1914 bis 1927 Professor f¼r physiologische und physikalische Optik. 1907 ver¶ffentlichte er seine grundlegende Abhandlung Tatsachen und Fiktionen in der Lehre von der Optischen Abbildung.