An intraocular lens system comprising: an anterior light-converging intraocular lens (16) for positioning within the eye, the anterior lens having an anterior surface and a posterior surface； and a posterior light-diverging intraocular lens (17) for positioning within the eye posterior to the anterior lens, the posterior lens having an anterior surface and a posterior surface； wherein the posterior lens is separate to the anterior lens； and wherein at least one of the surfaces of the anterior lens or surfaces of the posterior lens is a modified surface which includes a surface aberration which increases the depth of focus of the lens, optimises image quality and may also provide for a magnified image over a range of retinal eccentricities.
