Adopting a heat-clearing and fire-reducing formula of duck meat and pear, low-fat and low-allergy fresh duck meat is combined with refreshing fruits and vegetables, effectively reducing the secretion of nutritional tears in dogs. It enhances the retinal barrier through natural lutein, brightens and protects the eyes, and reduces eye irritation. Adding bile acids and CAT-antioxidant enzymes effectively alleviates liver-derived tear stains in dogs.