Function:
Eyelashes have a protective effect. Eyelashes at the upper and lower eyelid margins are arranged at the edge of the eyelid cleft like guards. Eyelashes are the second line of defense for the eyes. If foreign objects such as dust come into contact with eyelashes, the eyelids will be closed reflexively to protect the eyeball from foreign objects. It has the functions of shading, preventing dust, foreign matter and sweat from entering eyes, and protecting cornea and eyeball. Eyelashes can also prevent ultraviolet rays from damaging the eyes.