I have always endorced the use of lutein* regarding health eyes. I also recommend Morinda’s noni juice.
Here is an article about vision – eye sight;
The development of cataracts involves the deterioration of the protein structure of the lens with the replacement of fibrous tissue and calcium. The lens of the eye is responsible for focusing the light that enters the front part of your eye on to the retina, which is located at the rear portion of your eye. When the proteins of the lens are disrupted, the ability to focus on an image becomes much more difficult. This can lead to serious visual impairment or blindness. The development of cataracts is common and worsened by aging, UV light exposure, and diseases like diabetes.
So how do the lens proteins become damaged and how can you prevent it?
The lens normally contains several key enzymes, which absorb all the free radicals produced from the constant bombardment of light. This light reacts with the protein cells and causes free radical production. Under normal circumstances, your lens can deal with this free radical overload. However, age, disease, and inadequate intakes of free radical nutrients can deplete free radical scavenging enzymes.
– See more at: http://www.doctorshealthpress.com/vision-articles/can-what-you-eat-affect-what-you-see#sthash.fEOZXh3S.dpuf
This vitamin is found in higher quantities in nuts, seeds, wheat germ, and vegetable oils. It is the major fat-soluble vitamin, which helps replenish the antioxidant enzymes that are very active in the lens of your eye. Increasing your intake of these foods to a minimum of one to two servings per day—or taking supplements containing 400 IU of vitamin E per day—will be very helpful for ensuring healthy vision.
This nutrient is the most important antioxidant mineral in the human diet. This mineral is found in nuts, seeds, fish, meat, and poultry and you don’t need much of it! Selenium is regarded as a trace mineral, so the amounts that benefit human health are truly minuscule. Selenium is crucial in the formation of free radical scavenging enzymes that are very active in certain cells, including the lens. Increase your intake of these selenium-rich foods to two to three servings per day or take 200 mcg per day of selenomethionine.
There’s actually truth in the myth that eating carrots promote healthy vision! This nutrient is a pigmented compound found in carrots, sweet potatoes, mangoes, and other brightly colored vegetables and fruit. This is also a water-soluble compound classified as a carotenoid containing powerful free radical scavenging activity. Increasing your intake of orange, red, and deep-green colored vegetables, and fruit, will provide you with the necessary amount of beta-carotene required for optimum free radical absorption in the lens of your eye.
Berries contain pigment compounds called anthocyanidins, which are known for their free radical and anti-inflammatory properties. Increasing your intake of blueberries, cranberries, bilberry, and blackberries will power your cells with anthocyanidins, which can decrease the inflammation and free radical damage associated with cataract formation. Consume one to two servings per day of berries or take a bilberry extract supplement containing 25% anthocyanidin daily to help improve your eye health.
A number of foods—including eggs, spinach, goji berries (also known as wolfberries), kale, turnip greens, collard greens, romaine lettuce, broccoli, zucchini, kiwifruit, corn, garden peas, Swiss chard, and Brussels sprouts—are considered good sources of lutein* and zeaxanthin.
Do you know how your eyes see? Light rays enter your eye through a hole called the “pupil.” Once there, the light travels through a clear layer in your eyes called the “cornea” and a disc called the “lens.” These two together bend the light rays so that they form an image on your “retina,” which is found at the back of your eye. Your lens also has the important job to turn images upside down.
Your retina contains light-sensitive receptors called “rods” and “cones.” Rods and cones convert images into nerve impulses, which travel to your brain along your optic nerve. Your brain then interprets these impulses as an image, which it turns the right way up again. And that, in a nutshell, is how you see!
Your eyes need a lot of vitamins and minerals and other special compounds to stay healthy. Unfortunately, most of us don’t get enough of these sight-boosting nutrients in our weekly diet.
You can also protect your eyesight by eating lots of healing foods that contain two substances called lutein* and zeaxanthin. These two carotenoids are found in abundance in fruits and vegetables.
And finally, make sure you monitor your blood sugar. It can get tedious and tiring to keep track of blood sugar levels day in and day out. That being said, the more stable your blood sugar levels are, the less likely you are to suffer from the complications of diabetes such as retinopathy and vision loss.
Recent advances in the science of nutrition and vision have indicated that adding carotenoids—particularly lutein* and zeaxanthin—to your diet can have positive benefits. Those two carotenoids in combination have been shown to play a role in the prevention of age-related macular degeneration (AMD).
AMD is a progressive disease that attacks the retina. There are two types of AMD—early (or dry) and late (or wet). Dry AMD is the more common of the two conditions, and is generally considered the milder form. Wet AMD is usually more severe. Sometimes, wet AMD can cause a person to suddenly lose vision in the area right in front of them—a very alarming and distressing symptom that can be difficult to treat.
But, there’s some good health news: lutein and zeaxanthin may be able to help protect against the progression of wet AMD.
Orotected the retina from glutamate toxicity. Glutamate is a neurotransmitter that can damage and destroy nerve cells by over-stimulating them.