(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.
California poppy is a plant. It is the state flower of California. People use the parts that grow above the ground for medicine.California poppy is used for trouble sleeping (insomnia), aches, nervous agitation, bed-wetting in children, and diseases of the bladder and liver.It is also used to promote relaxation.t is the state flower of California. People use the parts that grow above the ground for medicine. California poppy is used for trouble sleeping (insomnia), aches, nervous agitation, bed-wetting in children, and diseases of the bladder and liver.