Foods like dark green leafy vegetables may have a stronger effect on eye health than traditional “eye foods” like carrots. New research suggests that some nutrients can prevent vision loss and eye diseases associated with aging, though experts are cautioning consumers that common claims by supplement manufacturers are overblown. Over 150 million Americans use glasses or contacts to correct nearsightedness or farsightedness, and sight problems increase with age. Previous research has found that vitamin C, E, zinc, beta-carotene and lutein have been linked to lower rates of common age-related eye diseases, and that food-based sources are better than supplements. A new study in the journal Ophthalmology found that vitamins E and C did not protect aging eyes from macular degeneration, showing the lack of benefit from single antioxidants. Generally nutritious diets may do more to protect the eyes, and have been linked to higher densities of compounds that protect the back of the eye.