A new study indicates that the carotenoids lutein and zeaxanthin may help improve vision under glare conditions such as bright sunlight or the beams of car headlights.
Scientists at the Vision Science Laboratory at the University of Georgia recently studied the relationship of lutein and zeaxanthin on macular pigment (MP), glare disability, and photostress recovery.
The macula helps filter damaging light rays. When the concentration of lutein and zeaxanthin in the macula is higher, the higher density of macular pigment enables the macula to absorb the light rays more efficiently.
Researchers studied forty healthy subjects (average age of 23.9) for six months, giving assessments at baseline, 1, 2, 4, and 6 months. Subjects were given 12mg daily of lutein and zeaxanthin supplements.
After 6 months, the lutein and zeaxanthin supplementation was shown to significantly reduce the negative effects of glare for both the visual performance tasks assessed for most of the subjects.
Read other studies about lutein and zeaxanthin, including their role in preventing macular degeneration and cataracts.
Learn more about natural leutein and zeaxanthin supplements
SOURCE: “Macular pigment and visual performance under glare conditions”, Stringham and Hammond, Optom Vis Sci., 2008 Feb;85(2):82-8
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