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Diet rich in Antioxidants for Good Eye Health

Diet rich in Antioxidants for Good Eye Health
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In developed countries, the degeneration of the macula related to age is the leading cause of blindness in people over 50 years.
To prevent its onset, it has been studied the possible beneficial role of diet rich in antioxidants, especially vitamins E and C, retinol and carotenoids lutein and zeaxanthin, and omega-3 fatty acids.

Antioxidants protect Macular Degeneration

Following a varied diet is essential for health, and specifically the consumption of fruits and vegetables is essential for eye care.
Thus, the Mediterranean diet is one of the most recommended, to be rich in antioxidants. Ingesting certain vitamins from childhood can prevent vision problems such as cataracts or Macular Degeneration (ARMD), which usually occurs in old age.
It has been shown through various studies and research that foods rich in antioxidants protect against Macular Degeneration (ARMD).
A scientific study published by the international journal Ophthalmic and Physiological Optics (OPO) shows that foods rich in antioxidants, particularly lutein and zeaxanthin, can help prevent the onset of AMD.
The lutein and zeaxanthin are the predominant carotenoids found in ocular tissues. Its strong antioxidant action makes them avidly by those most susceptible to the damaging effect of free radicals tissues.
Lutein is present in the kiwi, red grapes, zucchini, squash, collards, chard, broccoli, celery, asparagus and green beans.
Meanwhile, zeaxanthin, is in the honeydew and cornmeal.
Foods such as egg yolk, corn, orange, mango, papaya, and green leafy vegetables such as broccoli, spinach or green peas, lutein and zeaxanthin contain both.
Lycopene is one of the most powerful antioxidant nutrients. It is a pigment belonging to the carotenoid family that provides the characteristic red color to certain fruits and vegetables.
Macular Degeneration Age is a disease that occurs when a degenerative process affects the central area of the retina, the macula.
DMAE in a loss of central vision due to degenerative changes in the macula lutea surrounding the central fovea of the retina, which is the area responsible for central vision and visual acuity occurs.
The macula is very important because the visual acuity which is responsible is required to perform our daily tasks such as reading or driving.
The retina is an area with high metabolic activity and high vascularization processes involved in photoreception.
Photoreception intervenes in rhodopsin, a photosensitive pigment composed of a protein (vitamin A aldehyde).

Types of DMAE

There are two types of AMD:
dry or atrophic AMD: it is the most common and mildest for its slower evolution, so the end is less disabling.
DAME wet or exudative: it is much more aggressive, faster in its evolution, and without treatment can lead to loss of central vision, especially if both eyes are affected.
In developed countries, AMD is the leading cause of blindness in people over 50 years.
Each year there are 26,000 new cases of Macular Degeneration Age in Spain, being glaucoma (12.3%), AMD (8.7%) and diabetic retinopathy (4.8%) the main causes of loss vision in older people in our country.

Risk factors for AMD

Macular Degeneration Age is a multifactorial disease in which the main risk factor is age.
Other risk factors are genetic and environmental factors.
Among the genetic factors are family history, female gender, ethnicity Caucasian and light eyes.
Among the environmental factors we can highlight those related to oxidative stress,among which we highlight smoking, hypertension and / or hyperlipidemia, arteriosclerosis, exposure to ultraviolet radiation or cadences and poor diets with little contribution antioxidant and lutein.
This is very important from the point of view of prevention of macular degeneration, because we can make changes in lifestyle and the controllable risk factors, especially those who are highly predisposed, before they develop the disease.

A diet rich in antioxidants benefits eye health

According to a descriptive note published this June by the World Health Organization (WHO), worldwide there are approximately 285 million visually impaired, of whom 39 million are blind and 246 have low vision.
Approximately 90% of the global burden of visual impairment is concentrated in developing countries.
Globally, the uncorrected refractive errors are the most important cause of visual impairment, but in middle- and low-income cataract remains the leading cause of blindness.
The number of people with visual impairments attributable to infectious diseases has dropped considerably over the past 20 years.
80% of the world’s cases of visual impairment can be avoided or cured, WHO concludes.
As for the possible beneficial role of diet in relation to eye health, they have been studied vitamins E and C, retinol and carotenoids lutein and zeaxanthin, along with Omega-3 fatty acids.
A study by the Indian Journal of Clinical Nutrition indicates that the rich in vitamin C and vitamin E foods are essential to prevent cataracts.
According to the study, a combined intake of antioxidants-vitamin C and vitamin E, beta carotene and zinc is associated with reducing the incidence of cataracts.
Vitamin C found in citrus fruits (orange, kiwi, strawberry, guava, mango, gooseberry, papaya and pepper), parsley, broccoli and Brussels sprouts.
The best sources of vitamin E (alpha-tocopherol) are found in vegetable oils (sunflower, corn, soybean, olive oil), nuts (hazelnuts, almonds and peanuts), egg yolk, beta carotene and zinc.
Omega-3 (EPA and DHA) fatty acids are present in blue or fatty fish like salmon, tuna, trout, sardines, anchovies, mackerel, halibut, mackerel, tuna, Albacore , swordfish and eel, and crab.
The study of Ophthalmic and Physiological Optics shows that people with cataracts often have low levels of lutein and zeaxanthin in the retina or who consume little in your diet.
Research methods, which are mainly observation and statistics do not provide itself a guarantee and scientific certainty, but it is very possible that those who adopt a diet rich in fruits and vegetables and low in unhealthy animal fats, is more likely to have greater eye health and overall good health during aging.
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