Lutein and Macular Degeneration
Using lutein supplements may help treat and prevent several eye conditions, including macular degeneration. Research has shown that people with a high dietary intake of lutein may have a lower risk for developing macular degeneration. However, there is some conflicting evidence, with one study that showed a dietary intake of lutein was unrelated to the risk of developing some of the early stages of macular degeneration.
It is not yet clear if supplementation would be as effective as an increased dietary intake of lutein (through a diet rich in fruits and vegetables) for preventing macular degeneration.
Although it does not appear that lutein can slow down the progression of macular degeneration, studies have suggested that it may improve some of the symptoms of this disease.
In addition, although there is some evidence that lutein does work for some vision problems, there is little evidence to suggest that the supplement would be helpful for improving vision in general for people without any specific eye condition such as macular degeneration.
(Click Does Lutein Work? for a complete overview of the research done on lutein and macular degeneration.)