Puffy or swollen eyes are often caused by fluid retention. Tears come in three flavors. A person's eyes are constantly moistened by basal tears. For the front of the eye, they nourish, lubricate, and protect In order to get rid of irritants like foreign bodies or smoke, the body produces reflex tears. Through the tear ducts, the tears typically exit the eye and exit the nose. Each eye has a little drainage hole in the inner corner. We shed a lot of tears when we're sad. The third kind of tears is what is known as "emotional tears". Tears flow freely from the eyes and nose since the drainage system is overloaded. A puffy under-eye area might be caused by your body's efforts to reabsorb water.