A new study confirms supplements slow macular degeneration, an eye condition that can cause blindness. — A NEW STUDY CONFIRMS DIETARY SUPPLEMENTS for slowing the progression of age-related macular degeneration, the most common cause of blindness in older Americans. Age-related macular degeneration (AMD), or macular degeneration, is a common eye disorder. AMD results from the macula's deterioration, a small area in the middle of the retina…