Progressive multifocal ophthalmic lens with rapid power variation

A progressive multifocal ophthalmic lens comprising an aspherical surface with at every point thereon a mean sphere (S) and a cylinder (C), a far vision region, an intermediate vision region and a near vision region, a main meridian of progression passing through said three regions, a power addition equal to a difference in mean sphere between a near vision region control point and a far vision region control point, a progression length less than 12 mm, progression length being equal to the vertical distance between a mounting center and a point on said meridian where mean sphere is greater than mean sphere at the far vision control point by 85% of the power addition value,

• in which the ratio between
• firstly, the integral of the product of cylinder times the norm of sphere gradient, on a 40 mm diameter circle centered on the center of the lens, and
• secondly, the product of the area of this circle, power addition and a maximum value of the norm of sphere gradient on that part of the meridian comprised within said circle, is less than 0.16 times the ratio between
• a maximum value of the norm of sphere gradient on that part of the meridian comprised within said circle;
• and
• a maximum value for the norm of sphere gradient within said circle.