Sunglasses meet the requirements

What is needed is to be able to filter out over 99% of ultraviolet rays in sunlight. Furthermore, the function of blocking strong light is crucial, especially for dark colored lenses, which should not cause parallax or color difference. Parallax refers to the misjudgment of walking, twisting objects, and going up and down stairs after wearing glasses. When the color difference is severe, both red and green lights will be unclear, causing danger. The surface treatment, refractive index, curvature, and safety enhancement of sunglasses are also essential elements for eye care and protection.