(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.
Flower of opium poppy (Papaver somniferum) grown from commercial poppy seed. This strain has very pale petals compared with other more showy cultivars. Mature seed pod of the opium poppy (Papaver somniferum) with milky latex sap dripping from a recent cut.The latex sap contains a mixture of naturally-occurring narcotic alkaloids including morphine and codeine. Morphine is acetylated to produce diacetylmorphine, better known as heroin.eeds from the opium poppy are commonly used on poppy seed bagels. Although they don't cause any narcotic effects on hungry people after their coffee breaks, poppy seeds can trigger a positive reaction in very sensitive urine tests for drugs.