A product like I cap Lutein
and Zeanthine formula, or Ocuvite Extra are nice examples.
Omega 3 fish oil 1000mg twice a day should also be helpful. No smoking, limit alcohol, closley control blood pressure and cholesterol, exercise regularly, eat healthy diet with plenty of fruits, vegetables and fish. In this way you can do everything within your control to reduce the progression of macular degeneration in the future.