Age-related macular degeneration (AMD) is the leading cause of blindness in Americans ages 60 and older. But a new study suggests that limiting sun exposure and eating foods high in antioxidants might help lower risk.

Almost 5,000 older adults in Europe were asked about their adult lifetime exposure to sunlight. A link between sunlight exposure and the risk for AMD was found among older adults with a low level of antioxidants. In fact, their risk was up to four times higher.

To keep your risk down, the study authors advise wearing a hat and sunglasses when outdoors. They also suggest you follow the recommended dietary intakes for antioxidants, such as vitamin C and zinc.