During our daily activities (reading, watching television, computer work, driving) our focus constantly changes at different distances. The ability of the crystalline lens to focus at different distances is called accommodation. As we get older, the crystalline lens progressively loses accommodation, and near vision worsens. This begins to occur at age 40 in the majority of people. The multifocal intraocular lens was designed to improve both near and far vision. This is achieved through a process called apodization (gradual reduction in diffractive steps of the optic lens surface) thereby enabling focusing at different distances.