Macular Pigment Density and Macular Degeneration
The macular pigment (MP) is found in the macula – the center of the retina with the highest concentration found in the fovea (the center of the macula). It is made up of two pigments or carotenoids, which are phytochemicals found in plants. The two main carotenoids are lutein and zeaxanthin. They are responsible for protecting the eye from the harmful effects of free radicals and for protecting the eye from the damaging effects of blue light. Lutein is the main carotenoid in the peripheral retina, making up 67% or greater of the MP. Zeaxanthin is the main carotenoid in the central macula making up to 75% of the MP.
Increasing the concentration of these pigments in the eye may help prevent age-related macular degeneration. MP can be increased with diet and/or dietary supplements of lutein and zeaxanthin, the body cannot make these carotenoids.
Macular Pigment Density Studies
Currently there are several studies researching supplementation and its effect on MP.
Enhancement of Macular Pigment Density by Oral Lutein Supplementation (EMPOLS)
The purpose of this study in Berne, Switzerland is to determine if there is an increase in MP density after six months supplementation of Lutein 10 mg daily, contained in VitaluxPlus. The completion date of this study is December 2008.
The Role of Macular Pigment in Patients With Age-Related Macular Degeneration
This is an observation study in Berne, Switzerland, with the aim of assessing “the peak MP density as well as the MP distribution in relation to the risk for ARMD.” The completion of this study is December 2009. In this study hey hope to:
1. Assess the relationship of MP density with the occurrence of age related macular degeneration
2. Identify patients with low MP density
3. Improve the early diagnosis of patients at high risk for developing ARMD
4. Develop a basis for dietary supplementation of lutein and/or zeaxanthin in patients with high risk for ARMD due to low MP values
Foods High in Lutein
It is possible to increase your macular pigment by increasing the amount of lutein you get in your diet. Foods like corn, eggs, and spinach all contain lutein. Carrots, cantaloupe, oranges, red and orange peppers, kale and collard greens are also rich in lutein. Lutein is a fat-soluble substance, so it is important to eat some healthy fat with your raw vegetables, such as olive oil, for proper absorption through the digestive tract.
Lutein Capsules
Studies have also shown that you can increase your macular pigment through supplementing with lutein capsules. There are many different companies that offer lutein supplements.
To learn more about how much you should take and some of the research on this topic go to: http://www.WebRN-MacularDegeneration.com/lutein-for-macular-degeneration.html
Leslie Degner, RN,BSN
Better Health For Better Vision
http://www.WebRN-MacularDegeneration.com
Article Source: http://EzineArticles.com/?expert=Leslie_Degner
Author: Leslie Degner
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