(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.
History of Opium, Morphine, and Heroin. As long ago as 3400 B.C., the opium poppy was cultivated in lower Mesopotamia. The Sumerians called it as Hul Gil, the 'joy plant.' The Sumeriansâ knowledge of poppy cultivation passed to the Assyrians, the Babylonians, and ultimately, the Egyptians.