Blueberry fruit is rich in nutrients, especially vasectomy, which not only has good nutritional health care, but also functions to prevent brain and nervous aging, strong heart, cancer resistance, softening of blood vessels and enhanced human immunization. The first country to grow blueberries is the United States, but it is not a century old. Because of its high health value, it is one of the five healthy fruits recommended by the World Food and Agriculture Organization. The blueberries contain a large amount of purple ingredient, which is nectar. According to scientists, the nectar in blueberries promotes regeneration of retinal purple in retinal cells, prevents severe near-sightedness and retinal stripping and enhances vision. Let's eat blueberry sauce for our charming eyes。