Gullstrand, Allvar (1862-1930), a Swedish ophthalmologist, won the 1911 Nobel Prize for physiology or medicine for his work on the refraction of light through the eye. By investigating the structure of the eye lens, he concluded that accommodation, the ability of the eye to see at different distances, resulted chiefly from changes in the surface curvature of the lens and also from rearrangement of internal fibers of the eye. Gullstrand also improved the ophthalmoscope. He was born in Landskrona.
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