These monthly disposable contact lenses from CooperVision combine two innovative technologies to give you the best quality product for correcting presbyopia. These technologies are: PC technology, which draws water molecules to the lens keeping them fresh and comfortable until the very last day of use, and Balanced Progressive Technology which provides three lens zones for different distances. The middle zone of the lens helps people with presbyopia to see things right before their eyes, such as books or smartphones. The middle zone helps to see things in middle distances such as the screen of your computer. Finally, the outer zone is responsible for seeing things in larger distances. That way you receive contact lenses allowing you to see things clearly no matter how far you are from them. So if you are over 40 and need near and far sightedness correction, buy a box of Proclear Multifocal and enjoy crisp vision without glasses.