I bought this for my son to take for his vision as his vision is deteriorating due to him being on the computer so much. I think it helps. Bilberry is known to be good for the eyes and is even recommended by my eye doctor. Amazing supplement, high quality, and has good ingredients. I recommend this product.
I review my supplements occasionally by looking at results obtained by an independent lab test website. This particular brand and formulation received one of their highest grades. I take high amounts of bilberry for the phytochemical composition and antioxidant properties of bilberries. I alternate between this brand and another brand that sells wild-crafted bilberries. I have never noticed an improvement in vision as others have claimed, but my vision changes constantly according to how I use my eyes (as is normal but generally not known), so it would be hard to relate a change to this product.