(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.
The U.N. Office of Drugs and Crime (UNODC) estimated that the total area under opium poppy cultivation used in the illegal drug trade was 195,700 hectares in 2010, an increase of 5% from 2009 levels. The area cultivated in Afghanistan was 63% of the global total for both years; other major producers included Myanmar and Mexico.