Conventional aspheric and atoric single vision lenses can only be designed for a very limited number of "average" sphere powers across the Rx range. As a result, most prescriptions suffer some degree of power error in the lens periphery.
The ZEISS Single Vision Superb uses ZEISS freeform technology to eliminate the visual compromises found in conventional single vision designs.
ZEISS Single Vision Superb lenses are designed for each individual wearer’s prescription including: sphere, cylinder, axis, prism and prism base. Point-by-point optimisation is applied over the entire lens, leading to an even more comfortable single vision design.