Discoloration sunglasses for UK women lenses can be dark after the sun’s rays. When the lighting is abate, it becomes bright again. They can do this is because of the silver halide crystals in the play.
Under normal circumstances, it can make the lens to maintain the perfect transparency. Under the irradiation of the sun light and the silver in the crystal is separated out which is in the free form of silver in the lens inside the formation of small aggregates for sunglasses with best sales. These small silver clusters with irregular zigzag block.
The cheap sunglasses can not only absorb light and transmitted light, and the result has darkened lenses. In the case of light and dark, the crystalline body and re formed, the lens will be restored to the bright state.