Home Uncategorized 20 Foods for 20/20 VisionVibrant Vegetables Beta carotene, the headliner of pro-eye nutrients, is important for its role as a precursor to antioxidant vitamin A. Without enough, the cornea at the front of the eye can dry out, turning cloudy and even developing ulcers. The vitamin A in sweet potatoes and peppers keep the cornea hydrated, while the vitamin C they contain boosts antioxidant power. Broccoli and squash protect the retina with zeaxanthin and lutein.