Yes, lutein intake can lower the risk of developing cataract. Lutein concentrates in the macula, a small area of the retina responsible for central vision, to keep the eye safe from oxidative stress and the high energy photons of blue light. In daily life, as long as you consume more than 2.4 mg of lutein from foods and supplements, the incidence of nuclear lens opacities can be reduced. Therefore, in your diets, you should take more foods rich in lutein, such as carrots, corn, kale, spinach, collard, Swiss chard, mustard greens, red peppers, parsley, romaine lettuce, tomatoes, potatoes and red, blue and purple fruits.