2 In1 Photochromic New Design Anti Blue Light and Anti Radiation Eye Glasses Glasses for Men Women

High-concerned chemical : None Element type : Basic Classic Style type : Oval Place Of Origin : China (mainland) Frame Material : Alloy Model Number : 7009 Gender : Unisex Lenses Material : Polycarbonate Origin : Mainland China Color changing lenses, when exposed to ultraviolet and shortwave visible light in sunlight, darken their color and reduce their light transmittance; In indoor or dark areas, the transmittance of the lens light increases, leading to fading and restoring brightness. Photochromic glasses can adjust the transparency of the lens by changing color, allowing the human eye to adapt to changes in ambient light, reducing visual fatigue, and protecting the eyes.