The anti-fog fucntion of ski goggles

Snow reflects the sun strongly, the reflected light is more bright and dazzling; Even on cloudy or cloudy days, the uv rays reflected in the snow are strong. Wear special ski goggles when you can. Most ski goggles today have double layers of lenses that are less likely to fog, which is especially important for skiing. The gap between the two lenses forms an effective insulating layer (like double glass) so that water vapour does not condense on the lens. Snowboard goggles are coated with an anti-fog coating, which can effectively prevent fog. The anti-fog coating on ski goggles is easily scratched, and will be scratched even with a soft cloth. If the inside lens fogs up while skiing, stop to allow the fog to evaporate more quickly to restore clear vision. To better prevent fogging, ski goggles are also designed with vents or air vents, often on the top, sides or bottom of the goggles.