Method of designing and manufacturing an intraocular lens adapted to a patient's eye, the intraocular lens comprising an optical part and a haptics part, in which the optical part comprises an anterior surface with negative refractive power and a posterior surface with positive refractive power, the anterior surface being the closest to the eye's cornea once implanted in the eye, and the posterior surface being the closest to the eye's retina once implanted in the eye, that comprises the following steps: - to provide the haptics part, - to provide the optical part, and - to join the haptics part with the optical part, characterized in that in order to determine the refractive power D of the anterior surface of the optical part and the refractive power D' of the posterior surface of the optical part the following steps are performed: - a plurality of light rays are provided over the normal eye or, alternatively, in an eye model corresponding to an average physiological eye approximating the patient's normal eye, the light rays both on the optical axis and forming different field angles (714, 715, 716) with respect to the optical axis of the eye, - for each light ray with its field angle an axial length of the eye is measured, each measurement including the intersection point of the light ray with the eye's retina, and the refractive power of the cornea, - determination of the shape of the retina using a mathematical fit to an aspherical surface that contains the measured points, - calculation of the arc length S that goes from the intersection of the optical axis with the retina of the eye to the intersection of the light ray with the retina of the eye for each field angle, as a function of the shape of the retina and the field of the light ray, and - fit of the refractive power D of the anterior surface of the optical part and the refractive power D' of the posterior surface of the optical part using ray tracing optimization in a model of pseudophakic eye, to provide both an optical focus for the central vision on the optical axis as well as an arc length S for each field angle, so that they are like those in the normal eye. - to provide the haptics part, - to provide the optical part, and - to join the haptics part with the optical part, characterized in that in order to determine the refractive power D of the anterior surface of the optical part and the refractive power D' of the posterior surface of the optical part the following steps are performed: - a plurality of light rays are provided over the normal eye or, alternatively, in an eye model corresponding to an average physiological eye approximating the patient's normal eye, the light rays both on the optical axis - a plurality of light rays are provided over the normal eye or, alternatively, in an eye model corresponding to an average physiological eye approximating the patient's normal eye, the light rays both on the optical axis and forming different field angles (714, 715, 716) with respect to the optical axis of the eye, - for each light ray with its field angle an axial length of the eye is measured, each measurement including the intersection point of the light ray with the eye's retina, and the refractive power of the cornea, - determination of the shape of the retina using a mathematical fit to an aspherical surface that contains the measured points, - calculation of the arc length S that goes from the intersection of the optical axis with the retina of the eye to the intersection of the light ray with the retina of the eye for each field angle, as a function of the shape of the retina and the field of the light ray, and - fit of the refractive power D of the anterior surface of the optical part and the refractive power D' of the posterior surface of the optical part using ray tracing optimization in a model of pseudophakic eye, to provide both an optical focus for the central vision on the optical axis as well as an arc length S for each field angle, so that they are like those in the normal eye. - for each light ray with its field angle an axial length of the eye is measured, each measurement including the intersection point of the light ray with the eye's retina, and the refractive power of the cornea, - determination of the shape of the retina using a mathematical fit to an aspherical surface that contains the measured points, - calculation of the arc length S that goes from the intersection of the optical axis with the retina of the eye to the intersection of the light ray with the retina of the eye for each field angle, as a function of the shape of the retina and the field of the light ray, and - fit of the refractive power D of the anterior surface of the optical part and the refractive power D' of the posterior surface of the optical part using ray tracing optimization in a model of pseudophakic eye, to provide both an optical focus for the central vision on the optical axis as well as an arc length S for each field angle, so that they are like those in the normal eye.