The 10-year clinical Age-Related Eye Disease Study (AREDS) by the National Eye Institute (a division of the National Institutes of Health) showed that a unique vitamin and mineral supplement may help slow the progression of moderate to advanced age-related macular degeneration to more advanced stages of the disease and its associated vision loss among patients most at risk. PreserVision is a high-potency antioxidant supplement with select vitamins and minerals at levels that are well above those in ordinary multi-vitamins and generally cannot be obtained through diet alone.