Elemental supplement
Magnesium is another supplement that made a tremendous improvement in my eyes. I've tried several different types, and found Magnesium Malate tablets work best for me (Source Naturals, 3750 mg.). I tried the capsules, but crashed within a few days. Tried again to make sure it wasn't a coincidence, and got the same result. Dr. Carolyn Dean has a lot of great info on magnesium in her book, The Magnesium Miracle