Vacciniumspp., a plant of Ericaceae, is native to North America, but widely distributed in the northern hemisphere from the Arctic to tropical mountain areas. Vaccinium contains anthocyanins, pectin, tannin, arbutin, vitamin C and B vitamins. The main functions of Vaccinium uliginosum are to prevent blood vessels from rupturing, and it is also known as a repairman of capillaries, protecting eyes, preventing cancer, and improving chronic hepatitis B.

pure natural ﹝Bilberry Extract﹞, which can improve eyesight and prevent systemic arteriosclerosis, is the essence extracted from the leaves of evergreen low shrubs in the alpine and cold regions of northern Europe. Its main components are natural ﹝Rhodopsin﹞ and ﹝Flavonoid﹞.

rhodopsin is the most basic substance for eyes to produce vision, which can strengthen the sensitivity to dark and weak light.