(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.
While the California poppy does contain some sedative alkaloids, it contains no real opium. The most common use of this herb is in diffusion for treating the various physical and psychological conditions including insomnia, bedwetting (incontinence), anxiety and nervous tension, particularly in children.