Contour prism lens with progressive power

A contour prism lens, having a position dependent optical power and a position dependent horizontal prism, and having a distance-vision reference point and a near-vision reference point, the contour prism lens being characterized by a coordinate system with its vertical axis running through the distance-vision reference point, wherein:

• the optical power at the near-vision reference point exceeds the optical power at the distance-vision reference point by less than 0.5 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
• a horizontal derivate of the optical power along a horizontal crosscut of the contour prism lens through the near-vision point has a minimum within 5 mm from the near-vision reference point;
• wherein
• the horizontal crosscut is oriented laterally in the coordinate system.

A contour prism lens, having a position dependent optical power and a position dependent horizontal prism, and having a distance-vision reference point and a near-vision reference point, the contour prism lens being characterized by a coordinate system with its vertical axis running through the distance-vision reference point, wherein:

• the optical power at the near-vision reference point exceeds the optical power at the distance-vision reference point by less than 0.5 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
• a horizontal derivate of the horizontal prism of the contour prism lens along the horizontal crosscut through the near-vision reference point is between 0 and −0.02 diopters/mm in a 10 mm region comprising the near vision reference point;
• wherein
• the horizontal crosscut is oriented laterally in the coordinate system.