Preserve Mac Forte Advanced is a powerful antioxidant ocular supplement. Every person is unique and every person's body responds differently to vitamin supplements. We do get reports from some customers that they scored better on eye exams, performed better at vision checkups, and tell us they are experiencing improvements in their vision. However, these customers are usually long term users of Preserve Mac Forte Advanced, which means they have used it for 6 months or more. In addition, most customers will not experience improvements. The best hope that we have is to support our ocular health and slow the progression of eyesight deterioration. This is the main purpose of this product.