The herb contains Vitamins A and C, providing antioxidant protection which can help prevent free radical damage to the eyes. Vitamin A is required for sharp vision, while Vitamin C helps form collagen and is needed for growth and repair of tissue cells and blood vessels. Anthocyanosides support and protect collagen structures in the blood vessels of the eyes, assuring strong, healthy capillaries that carry vital nutrients to eye muscles and nerves.

Bilberry has long been a remedy for poor vision and "night blindness." Clinical tests confirm that given orally it improves visual accuracy in healthy people, and can help those with eye diseases such as pigmentosa, retinitis, glaucoma, and myopia. During World War II, British Royal Air Force pilots ate Bilberry preserves before night missions as an aid to night vision. Bilberry works by improving the microcirculation and regeneration of retinal purple, a substance required for good eyesight.

Dried Bilberry fruit and Bilberry tea has been used as a treatment for diarrhea and as a relief for nausea and indigestion. Bilberry is also used as a treatment for mild inflammation of the mucous membranes of the mouth and throat.