AMD risk reduction through diet
A recent study indicated that 20% of AMD cases in the AREDS study would have been eliminated if the participants consumed diets with a dGI (dietary glycemic index) below the sex median (women >= 77.9; men >= 79.3).
Chiu, Chung-Jung, Roy C. Milton, Gary Gensler, and Allen Taylor. Association Between Dietary Glycemic Index and Age-Related Macular Degeneration in Nondiabetic Participants in the Age-Related Eye Disease Study. American Journal of Clinical Nutrition. July 2007; 86(1): 180-8. http://ajcn.nutrition.org/content/86/1/180.full