Technology- two different, complementary lenses work together to provide exceptional vision at all distances. Balanced Progressive Technology combines spherical and aspheric optics and unique zone sizes to produce a "D" lens for the dominant eye and an "N" lens for the non-dominant eye. These two lens designs work together to provide a new level of vision quality. PC Technology leads to a more comfortable lens-wearing experience- especially important to presbyopic patients whose eyes often grow drier as they age. **Both Proclear Multifocal and Proclear multifocal XR use the same packaging and label. Proclear multifocal XR will have the XR on the prescription label at the end of the box.