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  1. Tears - Wikipedia

    Some of the functions of tears include lubricating the eyes (basal tears), removing irritants (reflex tears), and also aiding the immune system. [6] Tears also occur as a part of the body's natural …

  2. What Are Tears Made Of? Types of Tears - Cleveland Clinic

    Jan 10, 2025 · Tears are the clear, salty solution that glands above your eyes produce in response to different triggers. They’re made up of water, salt and more.

  3. What Do We Know about Tears? - Yale University Press

    Jul 24, 2025 · Located above the eyes in the lacrimal glands, tears come in three kinds: basal, reactive, and emotional, and each type of tear differs in function, chemistry, and type.

  4. How Tears Work - National Eye Institute

    Aug 6, 2025 · Tears keep your eyes wet and smooth, and they help focus light so you can see clearly. They also protect your eyes from infections and irritating things, like dirt and dust. Find …

  5. Facts About Tears - American Academy of Ophthalmology

    Apr 18, 2023 · Tears are essential to help you see clearly and maintain the health of your eyes. They can also help communicate your emotions. Your body makes three types of tears. Basal …

  6. What Are Tears Made Of and Why Do We Cry? - AARP

    Aug 23, 2022 · We cry to protect our eyes, to wash out irritants and because, well, we are moved to tears. “There are three types of tears: basal tears, emotional tears and reflex tears,” …

  7. The 3 Types of Tears: What They Are & What They’re Made Of

    May 17, 2024 · Tears are more an emotional response; they are a fundamental part of your eyes' health and function. In this comprehensive guide, we delve into the intricate world of tears, …

  8. Purpose of Tears: Why Do We Cry? Types and Benefits - MedicineNet

    Jun 4, 2025 · Researchers believe tears are a natural way for our bodies to relieve emotional pain, keep the eyes moist and healthy, and fight infection. Learn the purpose, types, and …

  9. The Pathway of Tears: Production to Drainage - Biology Insights

    Aug 5, 2025 · Tears are more than just a visible sign of emotion; they are a fluid that maintains eye health. They lubricate the eye’s surface, protect against irritants, and contribute to clear …

  10. Dry eyes - Symptoms & causes - Mayo Clinic

    Sep 23, 2022 · Dry eye disease is a common condition that occurs when your tears aren't able to provide adequate lubrication for your eyes. Tears can be inadequate and unstable for many …