The benefit of bilberry rests mostly on its ability to provide substances that are beneficial for eye health. You will find many eye formulas that contain bilberry, including Eyesight Rx. Bilberry herb has more than a dozen anthocyanosides for eye health. Bilberry may benefit those who have macular degeneration or are predisposed to a cataract. Phenolic compounds in bilberry are of benefit as antioxidants.