Watery eyes occur when the lacrimal glands produce excess tears or when the normal drainage system of the eyes becomes irritated or imbalanced. This condition is commonly associated with environmental irritants, airborne particles, smoke exposure, chemical sensitivity, seasonal pollen exposure, dry indoor air, screen overuse, dehydration, oxidative stress, inflammatory signaling, and mucosal irritation. Although excessive tearing may appear to indicate overhydration of the eye surface, it is frequently linked to instability of the ocular surface and reflex tear production caused by irritation or dryness. Chronic irritation of the eye surface may involve inflammatory mediators, histamine-related signaling, oxidative stress pathways, vascular irritation, epithelial barrier disruption, and environmental toxicant exposure. Dietary patterns rich in ultra-processed foods, oxidized fats, refined sugars, food additives, smoke exposure, alcohol intake, and nutrient-poor meals may contribute to systemic inflammatory burden that can influence ocular comfort and mucosal stability. Nutritional insufficiencies involving carotenoids, flavonoids, polyphenols, vitamin C, vitamin A precursors, hydration-supportive minerals, and antioxidant compounds may reduce resilience of the ocular surface. Research has shown that plant-derived phytochemicals including lutein, zeaxanthin, quercetin, anthocyanins, sulforaphane, EGCG, and citrus flavonoids may help support oxidative balance, endothelial function, inflammatory regulation, and epithelial integrity associated with eye comfort and tear stability. Whole-food plant-based nutrition patterns emphasizing deeply colored vegetables, leafy greens, berries, citrus fruits, cruciferous vegetables, herbs, mushrooms, seeds, legumes, and hydration-supportive foods provide a broad spectrum of antioxidants and bioactive compounds associated with eye tissue support. Hydration status, electrolyte balance, nitric oxide signaling, and antioxidant defense pathways may also influence ocular comfort. Excess sodium intake, chemical additives, combustion byproducts, and environmental pollutants may contribute to inflammatory stress affecting sensitive eye tissues. Scientific literature has associated carotenoid-rich foods such as kale, spinach, broccoli, and orange vegetables with support for retinal and ocular antioxidant systems. Polyphenol-rich berries, green tea, citrus fruits, onions, garlic, and cruciferous vegetables have also demonstrated activity involving inflammatory modulation, oxidative stress reduction, epithelial support, and vascular stability. A consistent whole-food plant-based pattern centered around minimally processed foods may support ocular surface stability and systemic inflammatory balance connected to watery eye symptoms.