Explain how nutrition is related to vision.....
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Answer:
Because the vision of eye depends on vitamins and vitamins are included in nutrients.thats why vision of eye is related to nutrition....
Nutrition To Protect Aging Eyes. Age-related eye diseases such as macular degeneration and cataracts commonly cause impaired vision and blindness in older adults. But lifestyle changes, including good nutrition, could help delay or prevent certain eye problems.
A Winning Combination: Vitamin C, Vitamin E And Beta-Carotene
An important study called The Age Related Eye Disease Study (AREDS) found that adults at high risk for progressive macular (AMD) who supplemented their diet with a combination of vitamins C and E, beta-carotene (a plant pigment that our body converts to vitamin A), zinc and copper, had a 25 percent lower risk of developing advanced AMD. Based on the results of the AREDS study, many eye doctors recommend this combination of vitamins and minerals as a preventative measure to reduce the risk of macular degeneration, especially for people with a family history of AMD or have other risk factors for the disease. Many commercially available supplements contain this combination of ingredients, which commonly is called the “AREDS formulation.”
A follow up of the initial AREDS study, AREDS2, found that participants who had taken the AREDS formulation in the original AREDS study were 25-30 percent less likely develop advanced AMD than those who had been assigned a placebo when studied 5 years later.
Lutein And Zeaxanthin
Lutein (“LOO-teen”) and zeaxanthin (“zeeah-ZAN-thin”) are yellow pigments that occur in many plants and vegetables. The central part of the retina (macula) has the highest concentration of lutein and zeaxanthin in the body, and these pigments appear to have a protective effect against macular degeneration. Also, studies show that a diet high in lutein and zeaxanthin may reduce the risk for cataracts. Excellent food sources of lutein and zeaxanthin include kale, spinach, collard greens, corn and egg yolks.
Zinc And Copper
The mineral zinc has both antioxidant and anti-inflammatory properties that may help prevent macular degeneration and cataracts, especially when combined with other antioxidants like vitamins C and E. Because too much zinc can cause copper deficiency anemia, if you take a supplement that contains zinc, it also should include copper. Good dietary sources of zinc include oysters, crab, wheat germ, peanuts and dark chocolate.
Good sources of omega 3 and fatty acids
Fish, avocados, and nuts are excellent sources of Omega-3 fatty acids
Omega-3 Fatty Acids
As an essential part of a good diet, omega 3 fatty acids are help maintain a healthy nervous system, fuel cells and boost immunity. Research also shows that a diet high in the omega-3 fatty acids DHA and EPA may help prevent macular degeneration. Omega-3s may also reduce the risk of dry eyes. Excellent food sources of DHA and EPA include salmon, tuna, sardines and freshly ground flaxseeds. Fish oil supplements also help you get a good daily supply omega-3s.
Flavonoids
Flavonoids (also called bioflavonoids) are compounds found in fruits, vegetables and certain beverages that have both antioxidant and anti-inflammatory properties. They are believed to play a role in the prevention of cataracts. Quercetin is one of the most widely consumed flavonoids; it is found in apples, berries, nuts, tea and onions. Red wine also is a good source of many flavonoids.