It is well known that carrots are good for the eyes. Lutein, the carotenoid from carrots, is part of the so-called yellow spot. This is the point of sharpest vision in our eyes. A Japanese study has now scientifically proven the connection between improved visual performance and taking lutein and zeaxanthin.
Why should one pay attention to good eyesight?
Strenuous work in front of a computer screen puts a strain on the eyes. Many diseases such as cataracts and glaucoma and the dreaded AMD, are related to loss of visual performance. In the case of AMD, age-related macular degeneration, cells in the area of the yellow spot die. This can lead to visual impairment or even total loss of vision. The result is blindness.
What are beta-carotenes? Where do they occur?
Both lutein and zeaxanthin belong to the group of so-called carotenoids. Carotenoids are natural dyes occuring mostly in green and yellow plants. AS active ingredients they are extracted from these plants. The colours vary between yellow and red. Lutein and zeaxanthin usually occur together. Both are found in green salad, spinach, corn grains or kale, as well as in animal products such as egg yolk. Further information on beta-carotenes can be found here.
Why does the body need Luthein and Zeaxanthin?
Several studies have shown that higher concentrations of lutein and zeaxanthin are important for maintaining visual performance. This is easily explained, as both carotenoids are concentrated in the yellow spot. There they form a natural protection against harmful UV radiation in the eye.
Japanese researchers now proved that a higher intake of carotenoids has a positive effect on the visual performance of healthy eyes. Supplementation with lutein, zeaxanthin and black currant extract also significantly reduces eye fatigue during strenuous reading.
Another publication by Chinese researchers showed that a supplementation with 6 or 12 mg of lutein over a 12-week time period can improve visual acuity and contrast perception in people working on computers.
