The invention relates to a spectacle lens comprising: an area (distance-vision part), which is designed for viewing at long distances and, in particular, viewing to infinity ; an area (near-vision part), which is designed for viewing at short distances and, in particular, at reading distances , and; a progression zone, which is located between said distance-vision part and near-vision part and in which the effect of the spectacle lens increases, along a curve (principal line) that winds up to the nose from the value in the distance reference point located in the distance-vision part to the value of the near reference point located in the near-vision part. The invention is characterized, among other things, in that certain conditions apply for minimizing the image-forming properties during horizontal viewing movements along the curve, which is formed by the points of intersection of the principal rays with the front surface, whereby at the beginning of the movement, these principal rays pass through the point with the coordinates (x-dx,y,s) up to the point with the coordinates (x+dx,y,s) upon completion of the movement, whereby s = -40 mm and dx = 10 mm.