Eye Vitamin & Mineral Supplement Patented Formula #1 Doctor Recommended Brand Based on the Only Clinically Proven Formula 2 Per DayPreserVision AREDS 2 Formula builds on the original, clinically proven PreserVision AREDS Formula, with lutein and zeaxanthin replacing beta-carotene based on the AREDS2 study.Completed in 2013, the Age Related Eye Disease Study 2 (AREDS2) was a 5-year study conducted by the National Eye Institute (NEI) of the National Institutes of Health.Complete AREDS 2 FormulaThis advanced PreserVision AREDS 2 Formula contains the exact same levels of all six nutrients based on the latest clinical evidence from the AREDS2 study.All 6 Clinically Proven Nutrients