(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.
Poppy seed is an oilseed obtained from the poppy (Papaver somniferum). The tiny kidney-shaped seeds have been harvested from dried seed pods by various civilizations for thousands of years. It is still widely used in many countries, especially in Central Europe, where it is legally grown and sold in shops.