Question

what causes eyes to produce tears ?why are tears saline? how are tears useful to eyes

Answer 1

tears are produced from eyes through lachrymal glands.it helps us to remove dust from eyes.so tears and crying is also useful for us but too much you should not cry because it decreases our confidence

Answer 2

Whether you're crying or your eyes are just tearing, the liquid in your eyes is created the same way.They are secreted by tear glands called lachrymal glands which are situated on
the inner surface of the upper eyelids.Mainly, tears are composed of water, salts, antibodies and lysozymes so they are saline Tears nourish and lubricate the surface of the eye as well as wash away debris. A smooth, balanced tear film (consisting of water, oil and mucus) also allows light to enter the eye in an optimal fashion.