Qualified color-changing glasses are not harmful to the eyes.
Color-changing glasses are made by adding photochromic materials to glass raw materials. It changes its color under the irradiation of appropriate wavelengths of light, and restores its original color when the light source is removed. If the color changing glasses we wear are purchased in regular optical stores, and the production process is qualified color changing glasses are not harmful to the eyes.
Color-changing glasses satisfy people’s different requirements for light on different occasions, which really adds convenience to life.
The disadvantage of color changing glasses is that it takes some time to change the color, not a change of light immediately complete the color changing process, so in the sight above still need some adaptation. Especially from the dark into the bright light or need to protect your eyes.