(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.
Brief Summary. Papaver somniferum, opium poppy, is an annual herbaceous plant in the Papaveraceae (poppy family) that originated in southeastern Europe and western Asia, and are now widely cultivated in Europe, Asia, China, and North Africa for their seeds, which are used in baking, as a condiment, and for their edible oil.
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.