What protects our eyes?
Our eyes are very delicate organs that need protection. Tears kill invading germs and our eyelids, eyelashes, and eyebrows help to keep out other harmful particles.
Our eyes’ first line of defence is eyelashes and eyelids. Our eyelashes form two rows of stiff hairs around each eye. They help to catch and remove any large particles that come too close to our eyes.
Our eyelids are equipped with muscles so that they can open and close. The reflex action that makes us close our eyes helps to protect them from being injured by objects or dazzled by the bright light.
Any dust or dirt that does reach our eyes is removed when we blink. Our eyelids close briefly, sweeping across the front of our eyeballs.
The eyebrows form two long patches of protective hairs above our eyes. They prevent moisture on our forehead from running down into our eyes.