Many of us grew up with the familiar recommendation to eat carrots to maintain vision. Indeed, carrots contain beta carotene, a substance that helps the body produce vitamin A, which is essential for proper eye function.
But nutrition experts explain that carrots are only a small part of the picture. In fact, there are other foods that contain important components that may help protect the eyes and maintain proper vision over time.
According to a clinical dietitian from the United States, combining components such as lutein, zeaxanthin and beta carotene in the diet may contribute to protecting the eyes from blue light damage and support retinal function. These components act as antioxidants that help reduce damage to eye cells that occurs over the years.
Here are four everyday foods that may contribute to eye health.
Eggs
The egg yolk contains lutein and zeaxanthin, two natural pigments that are also found in the retina of the eye. These substances help filter some of the light radiation and protect the structure of the eye from cumulative damage.
Another advantage of eggs is that these substances are fat-soluble, and therefore the natural fat in the yolk helps the body absorb them more efficiently.
In addition, eggs also provide high-quality protein and other nutritional components, and therefore they are easy to incorporate into the daily menu, for example in breakfasts, in salads or in hot dishes.
Pistachios
Pistachios may also contribute to eye health. A study published in the journal The Journal of Nutrition found that adults who ate a daily amount of pistachios for several weeks showed improvement in a measure related to protecting the eye from light damage.
The reason is that pistachios contain lutein, a plant pigment that accumulates in a central area of the retina called the macula. This area is responsible for sharp vision, and the pigments in it help protect it from damage.
Incorporating pistachios into the menu can be relatively simple. They can be consumed as a snack between meals or added to salads and various dishes.
Sweet potatoes
Similar to carrots, sweet potatoes also contain high amounts of beta carotene. The body converts this substance into vitamin A, which is one of the most important components for eye health.
Vitamin A helps maintain the integrity of the cornea, the transparent outer layer of the eye, and also contributes to the ability to see in low light conditions.
A deficiency in this vitamin may lead to symptoms such as dry eyes and even impaired night vision.
Spinach
Spinach is considered one of the vegetables richest in lutein and zeaxanthin. These two substances help protect the eyes from light damage and according to various studies may reduce the risk of developing age-related eye diseases, such as cataracts and macular degeneration.
In addition, spinach also contains vitamin C and other antioxidants that help protect the body's cells from oxidative damage.
Spinach can be incorporated into the daily menu in a variety of ways. It can be added to smoothies, incorporated into omelets, included in salads or lightly sautéed as a side dish.
Nutrition is only part of the picture
Despite the possible benefits of these foods, experts emphasize that there is no single food that can "guarantee" good vision or completely prevent eye diseases.
Maintaining eye health is related to a range of factors that include a balanced diet, physical activity, periodic eye examinations and protection from prolonged exposure to sunlight and blue light.
However, incorporating foods rich in antioxidants, vitamins and natural pigments into the daily menu may be a simple and effective step toward maintaining eye health over the years.