why do we have eyelashes

Eyelashes primarily serve to protect the eyes from dirt, debris, and other airborne contaminants. They act as a barrier to prevent irritants from reaching the eye and help trigger a protective blinking reflex when touched, much like whiskers on a cat. Additionally, eyelashes help reduce evaporation of tears, maintain moisture on the eye surface, and divert sweat and particles away from the eyes, contributing to eye health and comfort. Beyond their protective role, eyelashes also play a part in physical attractiveness by making the eyes appear larger and healthier, signaling youth and vitality.