Studies show that people with low levels of antioxidants are more likely to develop age-related macular degeneration (AMD) than those with higher levels. (AMD is the leading cause of blindness in people over age 60.) Vitamin C—which is abundant in orange juice—is one antioxidant that seems to be especially protective against the disease. (Other antioxidants include vitamin E, lutein and zeaxanthin.) While it’s not completely clear how antioxidants protect your eyes, it seems that they accumulate in the retina where they can mop up free radicals, compounds that damage cells by starving them of oxygen.