Energia Therapeutic Eye Mask does not only block any source of light, it also ensures that your eyes receive the rejuvenating effect of far-infrared rays and negative ions while you are sleeping. It allows you to address eyesight issues like astigmatism, far sightedness, and near sightedness. The far-infrared ray effectively controls eye surface temperature providing relief for red, tired, and teary eyes. It can also improve blood circulation in the eyes and its surrounding tissues making it an effective solution for dark circles, eye bags, and even eye wrinkles. Two elastic straps around the user’s head fasten this specially designed mask. With its perfect weight and design you do not even feel it is there at all.