(1834â1908), Dutch ophthalmologist. Snellen was director of an eye clinic at Utrecht. In 1862 he introduced a test for measuring the acuteness of vision which consisted of printed letters or words in type of various sizes.
The poppy of wartime remembrance is Papaver rhoeas, the red-flowered corn poppy. This poppy is a common weed in Europe and is found in many locations, including Flanders, which is the setting of the famous poem In Flanders Fields by the Canadian surgeon and soldier John McCrae.
Bernstein Associates/Getty Images. 1  The genus of the stateâs official flower, the California poppy (Eschscholzia californica) is named in honor of Dr. J. F. von Eschscholtz, a surgeon and naturalist who explored the California coast with Russian expeditions from 1815 to 1818.