There are many particles in the air, like dust and sand, which can get into your eyes and harm them.. Your eyelashes help to tell your eyelids when they need to shut to protect the eyes. Along with your eyebrows and forehead, your eyelashes also help to shield your eyes from the bright light of the sun.
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An eyelash or simply lash is one of the hairs that grows at the edge of the eyelid. It grows in three layers on the edge of the eye lids. Eyelashes protect the eye from debris, dust and small particles and perform some of the same functions as whiskers do on a cat or. . Hornbills have prominent eyelashes (vestigial feathers with no barbs), as do .