More affordable alternatives, such as "lifestyle lenses" (also known as reading or computer glasses), work on similar principles. For example, computer glasses provide intermediate vision correction in the upper portion of the lens and near vision correction in the lower portion. This design enhances comfort for screen use, reading sheet music, or engaging in creative activities that require clear vision at arm’s length. Since these lenses do not correct distance vision, they offer a wider field of view and a smoother transition between power zones compared to standard progressive lenses.