http://www.amd.org/what-is-amd/dry-amd/what-can-i-do-about-it.html
Macular Degeneration Partnership
You have control over some of the known risk factors for macular degeneration. If you have macular degeneration, a family history of AMD, or are in the "macular generation" (age 60 or above), you should be particularly attentive to these: stop smoking, control high blood pressure, protect your eyes from exposure to harmful sunlight, and eat a healthy diet. However, it is most effective to take these steps well before you are at risk.