Yes, it will do a good job to the cataract. According to a study, supplementing with lutein improves visual function in cataract sufferers and may slow the progression of the cataracts. Cataracts are among the most common causes of visual impairment in the elderly. They are caused by progressive degeneration of the proteins that make up the lens of the eye, which eventually results in clouding of the lens. The cause of age-related cataracts is unknown. Besides, Lutein is a pigment that you can find in many foods. Your body cannot produce it, so a certain dietary intake or daily supplement will be a good way to protect your eyes, especially for some people who have the eyes floaters. The reason is that the macula, an area of tissue on the back of your eye, contains lutein deposits, and the presence of lutein, along with its antioxidant properties, promote eye health.