Bausch & Lomb PreserVision Soft Gels are based on the AREDS formula an antioxidant vitamin and mineral supplement proven clinically effective in the Age-Related Eye Disease Study (AREDS). AREDS was a 10-year independent study conducted by the National Eye Institute (NEI) of the National Institutes of Health (NIH). Bausch & Lomb PreserVision Soft Gels are based on the AREDS formula - a high potency anti-oxidant supplement with select vitamins and minerals at levels that are well above those found in ordinary multivitamins and generally cannot be attained through diet alone. This product is in convenient to take 2 per day Soft Gels. PreserVision AREDS Eye Vitamins & Minerals with Beta Carotene Original AREDS Formula 120 Softgels