other designer glasses link (https://s.wsxc.cn/3iWcUZ)
Transition prescription lens (5 colors)6
Also called "photosensitive lens", it is generally achieved by adding silver halide substance to the lens itself or spin-coating a color-changing film on the lens surface. The lens darkens under strong light, and becomes transparent under indoor light. Weak automatically adjusts the color of the lens, one lens is dual-use, and automatically blocks ultraviolet rays.
just transition black , brown ,pink,purple,blue lens
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