Outside the Eyeball- - eyelid, eyebrow, eyelash, tears. The eyelids protect the eyes from light and injury and provide moisture. They spread tears evenly over the cornea to keep it smooth.
Eyebrows and eyelashes protect the eyes from particles like dust. Eyebrows are an important part of our expressions and help show our emotions.
Tears are formed by tiny glands that surround the eye.
The layer of tears are important because they; keep the eye moist, create a smooth surface for light to pass through the eye, nourish the front of the eye, and provide protection from injury and infection.
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