The regular intake of lutein and zeaxanthin can be beneficial for improving vision in young, healthy people, according to a study sponsored by DSM and Kemin.
The results of the study show how FloraGLO Lutein and OPTISHARP Zeaxanthin supplementation can improve the ability to see under glare conditions have been published in Investigative Ophthalmology & Visual Science.
The randomized, double-blind and placebo-controlled study took place at the University of Georgia in Athens over the course of 12 months.
DSM’s webinar on the GLARE2 study will highlight benefits of lutein and zeaxanthin supplementation in enhancing visual performance and comfort in younger consumers on March 17, 2015 at both 9:00 CET/16:00 SGT/17:00 JST and 9:00 PST/12:00 EST/18:00 CET.
“The global market for eye health ingredients is projected to increase at a compound annual growth rate of 6% until 20192,” said Jens Birrer, global marketing manager at DSM.
“Eye health supplements containing lutein and zeaxanthin have typically been aimed at older consumers, with age-related eye conditions identified as a major health concern.”
“The GLARE2 study has been conducted in a younger, healthier population, opening up new markets to the industry as people look to enhance their visual performance and comfort through the consumption of nutritional ingredients from an early age.”
In the GLARE2 study, approximately 100 young and healthy subjects were assessed and received daily dosage levels of 10mg of FloraGLO Lutein and 2mg of OPTISHARP Zeaxanthin, or a placebo over a one year supplementation period.
Macular pigment optical density (MPOD) and serum levels of lutein and zeaxanthin increased significantly in the supplemented group, while no changes were noted in the placebo group.
The macula is the yellow spot in the central retina that is responsible for detailed central vision and the yellow color is the result of high concentrations of lutein and zeaxanthin.
MPOD is a measure of the amount of macular pigment present in the macula and has been shown to have a major impact on visual performance.
The study looked at three aspects of visual performance: glare disability, photostress recovery time and contrast enhancement.
Glare disability is the amount of glaring light that can be tolerated by a person before vision is severely impaired, such as when a person is driving a car and encounters glare from the sun that shines directly through the windshield.
Photostress recovery time determines how fast the eye can recover sight after experiencing a flash of bright light; similar to when sunlight or headlights of an approaching car suddenly impair vision while driving.
Contrast enhancement is the ability to detect chromatic borders that allow discrimination of an object from its colored surroundings, which is important in sport activities such as baseball.
For better vision
The results of the study demonstrate significant improvement in these aspects of visual performance and add to the growing body of evidence to support the role of lutein and zeaxanthin in helping to achieve optimal visual performance and comfort.
“The scientific community has known for a long time that increasing macular pigment density can improve many aspects of visual function and the GLARE2 study provides important further confirmation,” adds Billy R. Hammond Jr., Ph.D., the principal investigator of the study, which was conducted at his Vision Sciences Laboratory, University of Georgia in Athens.
“Showing lutein and zeaxanthin improve function in normal healthy individuals widens its applications, as we continue to investigate the potential of nutrition to support both eye health and visual performance.”
Lutein and zeaxanthin cannot be synthesized by the body but rather are contained naturally in green, leafy vegetables, such as kale and spinach and obtained through the human diet.