Color-changing myopic glasses are also a kind of myopic glasses, because myopic patients wearing myopic glasses, when they go out, they want to wear sunglasses is not suitable, so there are color-changing myopic glasses. Color-changing myopic glasses can be worn appropriately when playing sports outdoors and are good for filtering UV rays from the eyes. But indoors, especially when studying or playing with cell phones wearing color-changing glasses, due to the stimulation of light such as desk lamps or cell phones will also darken the color of glasses, so that the pupils narrow, so that the books or cell phones color brightness darkened, thus easily cause visual fatigue. So color-changing myopic glasses are mainly depending on the environment, it is recommended to wear them outdoors or when the sun is strong, and indoors with ordinary frame glasses.