LINDA-tortoise

A lens that is a darker color on the top of the lens and gradually becomes lighter on the bottom is a gradient lens. They include complete UV protection, Dark colors (brown/gray/green) are ideal for everyday use and most outdoor activities. Darker shades are intended primarily to cut through the glare and reduce eyestrain in moderate-to-bright conditions. Gray and green lenses won’t distort colors, while brown lenses may cause minor distortion.