There have been many studies done in New Zealand and Japan that demonstrate the eyesight protective benefits of Active Cassis Extract. Some of which clearly support that anthocyanins from Cassis berry aid in conditions such as glaucoma, shortsightedness, relieve of tired eyes, and reduction of dark circles. Also, numerous other studies have also shown the eye health and vision protective benefits of lutein found in Marigold extracts and the traditional western eye herb, Eyebright, which has a long history of use in Europe.