Bilberry (Vaccinium Myrtillus L.) is a kind of perennial deciduous or evergreen fruit shrubs, mainly found in subarctic regions of the world as in Sweden, Finland and Ukraine, etc. Bilberries contain dense levels of anthocyanin pigments, which was said popularly to have been used by World War II RAF pilots to sharpen night vision. In fork medicine, Europeans have been taking bilberry for a hundred years.