Optical lens

An optical lens intended to be worn in front of an eye of a wearer having at least one prescribed refractive power Px, the optical lens comprising:

• two opposite optical faces and a plurality of contiguous optical elements, at least part of the optical elements having an optical function of not focusing an image on a retina of the eye of the wearer so as to slow down progression of abnormal refraction of the eye, wherein:
• over a pupil having at least a 4 mm diameter, one can measure in a plane corresponding to the at least one prescribed refractive power along at least one direction, a Modulation Transfer Function through the optical lens greater than 0.1 between 0 and 20 cyc/deg;
• a majority of light rays passing through the optical lens over said pupil pass through at least one of the plurality of optical elements, and
• each of the contiguous optical elements verifies that d=K/√(|P|)
• with d a characteristic dimension of a contour of said optical element in mm,
• |P| the absolute value of a characteristic optical power of said optical element expressed in diopter, and
• K a number greater or equal to 0.9 and smaller than or equal to 1.7,
• wherein over the said pupil the optical lens produces a first optical path difference, a best spherical fitting optical lens produces a second optical path difference, a differential optical path map (DOP) being composed as the difference between said first optical path difference and said second optical path difference, the differential optical path being different than zero, and
• wherein over said pupil, a portion of said differential optical path within a range [minimum level of DOP, minimum level of DOP+10% of an amplitude] represents less than 30% of said differential optical path over said pupil, with an amplitude the maximum level of said differential optical path over said pupil.