US Patent 7080906 Translating bifocal wear modality

The invention discloses a pair of bifocal contact lenses: one lens for dominant eye and one lens for non-dominant eye. Both lenses have an optical zone divided into a superior zone and an inferior zone. The superior zone of the lens for dominant eye is for distance vision correction while the inferior zone is for near or intermediate vision correction. The superior zone of the lens for non-dominant eye is for distance or intermediate vision correction while the inferior zone is for near or intermediate vision correction.