(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.
Overview. The Oriental poppy is a perennial flowering plant that produces an orange-red colored bloom that measures five to nine inches across.The plant blooms during May and June and reaches a height of two to four feet.verview. The Oriental poppy is a perennial flowering plant that produces an orange-red colored bloom that measures five to nine inches across.