This extension helps you in protecting your eyeIt is recommended to blink your eye at regular intervals of time. Blinking provides moisture to the eye by irrigation using tears and a lubricant the eyes secrete. The eyelid provides suction across the eye from the tear duct to the entire eyeball to keep it from drying out. Blinking also protects the eye from irritants. For more information please refer here - https://en.wikipedia.org/wiki/Blinking