How Tears Work National Eye Institute

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 out what tears are made of and how they protect your eyes.

Why Are Tears Salty?

Tears Definition, Dictionary Collection

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The Way Eyes Work - Discovery Eye Foundation

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Tears Definition, Dictionary Collection

Floaters National Eye Institute

Surgery for Dry Eyes: Types & When It's Necessary