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, …

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.

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 …

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,” …

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.

Jun 24, 2019 · Have you ever wondered what tears are made of? The answer might surprise you. And do crocodiles cry? We'll tell you some surprising facts about tears.

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 …