Yes, it is bad for eyes. It is invisible for human eyes, but it can cause damages to eye just like UV radiations do. The wave length of infrared light is longer than the visible light spectrum and shorter than the microwave radiation. Although it has very few damages, it is good to get aware of it. The infrared light is what we receive as heat. So we also get it from the surroundings. Long term exposure to the infrared light, the longer wavelengths could cause damages to eyes gradually. For example, welders are more likely to develop the cataracts. The infrared light might cause opacity of the lens if long time exposure with no protection. And too much heat might burn the surface of eyes just like skin sun burns. But don't be freaked out, there are far more benefits of infrared light than harms. It gives you the warmth when it is chilly and it can promote the amount of white blood cells in human body, which is helpful for healing and strengthening our immunity system.
