Research suggests that a healthy and nutritive diet reduces the risk of cataracts and macular damage. When the body gets its essential dose of vitamins, minerals, and other nutrients, the body system functions better. For eye health, some specific antioxidants prevent glaucoma, blindness, impaired vision, etc. Omega-3 fatty acids found in nuts, seeds, olive oil, fish, fruits, etc, for instance, fight against the dry eye syndrome and prevent macular damage.