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What Is The Role Of The Natural Tear Film?
Tears enable clear and comfortable vision. They combat dry eye by providing several functions that help keep eyes healthy. Among these benefits are:
Dry Eye & Environmental Factors
- Tears moisturize the surface of the eye. This prevents the cornea (the transparent front portion of the eye that covers the iris, pupil, and anterior chamber) from drying. If the cornea dries, it can potentially become damaged. Pain, blurred vision, and even loss of sight may result in particularly severe cases.
- Tears lubricate the inside of the eyelids to make blinking smooth and comfortable. Without them, the surface of the eye can become irritated, which can potentially cause damage to the cornea.
- Tears nourish the eye by transporting oxygen to the eye and removing carbon dioxide. Without tears, a malnourished cornea can lead to damaged vision.
- Tears clean and protect the eye by washing away foreign particles. Tears contain antibacterial and antiviral substances that help defend the eye against infection.
- Artificial tears are designed as a replacement for natural tears in the case that natural tears cannot perform in the necessary capacity.
What Is The Cause of Dry Eye?
What Is The Role Of The Natural Tear Film?