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Though composition varies among different tear types. The composition of tears caused by an emotional reaction differs from that of tears as a reaction to irritants, such as onion fumes, dust, or allergens. They also protect your eyes from infections and irritating things, like dirt and dust. Your body makes three types of tears. Basal tears are in your eyes all the time to lubricate, nourish and protect your cornea. They can also help communicate your emotions. · tears are the clear, salty solution that glands above your eyes produce in response to different triggers. · tears are essential to help you see clearly and maintain the health of your eyes. Find out what tears are made of and how they protect your eyes. Tears spread across the surface of the eye when you blink. · your tears clean your eyes and keep them moist. · learn how tears play an important role in keeping us healthy by keeping the surface of the eyeball clean, moist, and lubricated. Read about tears and what can go wrong, like too many tears, too few tears, or tear duct problems. Tears are composed of water, salts, antibodies, and lysozymes (antibacterial enzymes); · your tears are produced by lacrimal glands located above your eyes. They’re made up of water, salt and more. · tears keep your eyes wet and smooth, and they help focus light so you can see clearly.