Tears - Wikipedia
Human tears Tears (tear film) are a transparent fluid secreted primarily by the lacrimal glands (tear gland) found in the eyes of all land mammals. [1] According to the mode of production, …
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.
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 …
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.
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,” …
Purpose of Tears: Why Do We Cry? Types and Benefits
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 …
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 …