(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.
Before theyâre put into muffins, bagels, or cakes, poppy seeds can be found in poppy seed pods. It just so happens that opium is found in those same seed podsâit is a milky substance that is extracted from the seed pods which contains morphine and codeine, among other pain relieving substances.