Lutein is a nutrient that is very important for the health of our eyes. It belongs to the carotenoid group and occurs naturally in green leafy vegetables, such as spinach and kale, as well as in orange-colored fruits and vegetables. One of the main functions of lutein is to protect our eyes from harmful light, especially the sun’s UV rays. It acts like a natural pair of sunglasses and filters out some of these rays before they reach the retina in the eye. As a result, lutein can help reduce the risk of harmful effects of sunlight on the eyes, such as the development of age-related macular degeneration or cataracts. Lutein also plays an important role in improving vision. It is an integral part of the yellow spot, also known as the macula, a spot in the center of the retina that is responsible for central vision. Lutein accumulates in the macula, where it aids in imaging and color vision. It also helps to improve contrast vision so that objects can be perceived more clearly. As we age, the amount of lutein in our retina usually decreases, which can be associated with an increased risk of eye problems. An adequate intake of lutein through diet or supplements can therefore help to support the health of our eyes and reduce vision-related problems. It is also important to note that lutein is best taken in combination with other nutrients, such as zeaxanthin and omega-3 fatty acids, as these have synergistic effects on eye health. A balanced diet with plenty of fruit, vegetables and oily fish can therefore help to increase the amount of lutein and other important nutrients and thereby improve vision. Overall, lutein is a valuable nutrient for the health of our eyes and the maintenance of good vision. A targeted intake of this carotenoid can help to reduce the risk of age-related eye problems and support vision.