Seeing is More Than Believing Clarlet® is the name of the plastic single vision lenses by Carl Zeiss. They are the most exclusive support for the eyes. Clarlet® lenses provide the wearer with excellent clear vision and superior image formation. To improve optical and cosmetic performance, particularly those with higher powers, the full ZEISS hi-index single vision product range is available with aspheric surfaces. The flatter curvature of aspheric lenses not only makes them look better, it also provides the wearer with optimum vision. Carl Zeiss offers a broad range of Clarlet® single vision lenses. Each lens is a expert for itself.