An intraocular lens, IOL, comprising: an anterior optical element having an anterior surface and a posterior surface wherein at least one of the anterior and posterior surfaces (12a, 12b) is an aspherical surface, a posterior optical element having an anterior surface and a posterior surface wherein at least one of the anterior and posterior surfaces (14a, 14b) is an aspherical surface, a mechanism for coupling said anterior and posterior optical elements (12, 14) with the posterior surface of the anterior optical element spaced apart from the anterior surface of the posterior optical element so as to allow axial movement of said optical elements (12,14) relative to one another between a first distance vision position having a first separation and a second near vision position having a second separation for providing accommodation when the lens is implanted in a subject's eye; characterized in that said mechanism is configured to allow an adjustment of the separation between said optical elements (12,14) from a first distance vision separation of 0 mm to a second near vision separation of 2 mm as the accommodation varies from distance vision to near vision; and said aspherical surfaces of the anterior and posterior element (12,14) are adapted to provide a combined spherical aberration that varies over a range with accommodation otained by a change in axial spacing corresponding to accommodation of the IOL, wherein said spherical aberration changes from a positive value of +0.20 μm at said first distance vision position to a negative value of -0.50 μm at said second near vision position, and wherein the IOL optical power is about 0 Diopters in said first distance vision position and is about 6 Diopters in said second near vision position. an anterior optical element having an anterior surface and a posterior surface wherein at least one of the anterior and posterior surfaces (12a, 12b) is an aspherical surface, a posterior optical element having an anterior surface and a posterior surface wherein at least one of the anterior and posterior surfaces (14a, 14b) is an aspherical surface, a mechanism for coupling said anterior and posterior optical elements (12, 14) with the posterior surface of the anterior optical element spaced apart from the anterior surface of the posterior optical element so as to allow axial movement of said optical elements (12,14) relative to one another between a first distance vision position having a first separation and a second near vision position having a second separation for providing accommodation when the lens is implanted in a subject's eye; characterized in that said mechanism is configured to allow an adjustment of the separation between said optical elements (12,14) from a first distance vision separation of 0 mm to a second near vision separation of 2 mm as the accommodation varies from distance vision to near vision; and said aspherical surfaces of the anterior and posterior element (12,14) are adapted to provide a combined spherical aberration that varies over a range with accommodation otained by a change in axial spacing corresponding to accommodation of the IOL, wherein said spherical aberration changes from a positive value of +0.20 μm at said first distance vision position to a negative value of -0.50 μm at said second near vision position, and wherein the IOL optical power is about 0 Diopters in said first distance vision position and is about 6 Diopters in said second near vision position.