What is the role of tears?
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Posted by Hritesh Kumar Sahoo 5 years, 1 month ago
- 2 answers
Meghna Thapar 5 years, 1 month ago
Tears prevent dryness by coating the surface of the eye, as well as protecting it from external irritants. There are no blood vessels on the surface of the eye, so oxygen and nutrients are transported to the surface cells by tears. Foreign bodies that enter the eye are washed out by tears.
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Raunak Nayak 5 years, 1 month ago
1Thank You