Allvar Gullstrand (1862-1930), Swedishophthalmologist[?]. He was professor (1894–1927) successively of eye therapy and of optics at the University of Uppsala. He applied the methods of physical mathematics to the study of optical images and of the refraction of light in the eye. For this work he received the 1911 Nobel Prize in Physiology or Medicine. He is noted also for his research on astigmatism[?] and for improving the ophthalmoscope and corrective lenses for use after removal of a cataract from the eye.
... km². Of the total population of 26450, 13112 are male, and 13338 are female. The population density of the community is 18 inhabitants per km².
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