CONTOUR PRISM LENS WITH PROGRESSIVE POWER

A contour prism progressive lens has a position dependent optical power and a position dependent horizontal prism, and a distance-vision reference point and a near-vision reference point. It is characterized by a coordinate system with its vertical axis running through the distance-vision reference point and has an optical power at the near-vision power reference point that exceeds the optical power at the distance-vision reference point by a value between 0.25 diopter and 1.0 diopter. The horizontal prism on the vertical axis at a vertical coordinate of the near-vision reference point differs from the horizontal prism at the distance-vision reference point by more than 0.2 prism diopter base-in; and the optical power along a horizontal crosscut of the contour prism progressive lens through the near-vision reference point has a broad maximum where the region where the optical power is at least 85% of its peak is at least 5 mm wide.