AMD stands for age-related macular degeneration. It is a condition in which the macula—the central portion of the retina responsible for detailed vision—gradually deteriorates. As the disease progresses, central vision is lost while peripheral vision is usually preserved. AMD is the leading cause of blindness in adults over the age of 55 and is estimated to affect between 25 and 30 million people worldwide.
Research suggests that antioxidant nutrients may do more than simply slow progression. A small study published in Ophthalmology (February 2008; Volume 115, Issue 2, Pages 324–333) evaluated the effects of targeted nutritional supplementation in patients with AMD. Twenty-seven subjects were given either a placebo or a combination of antioxidant nutrients, including vitamins A and E, zinc, and bioflavonoids—plant-derived antioxidants such as lutein, zeaxanthin, and astaxanthin.
Although the study was limited in size, the researchers observed measurable improvements in visual function among participants receiving the antioxidant and bioflavonoid combination. These findings suggest that nutritional support may play a role not only in prevention, but also in supporting visual function in individuals with age-related macular degeneration.
