Benefits of PureVision2 for Presbyopia contact lenses Multifocal lenses for those with presbyopia More convenient than switching to reading glasses Soft and flexible lenses that fit comfortably Breathable so oxygen can reach the eyes for optimum levels of health and comfort Monthly lenses that can be worn for up to 30 consecutive days Find out how to read your prescription for PureVision2 for Presbyopia including base curve and diameter. More information about PureVision2 for Presbyopia PureVision2 for Presbyopia, from Bausch & Lomb, are monthly multifocal lenses that provide comfortable, clear and healthy vision for presbyopia patients with busy lifestyles. These lenses can be worn for up to 16 hours a day, 7 days a week and offer those with presbyopia another option to having to constantly put on or take off reading glasses when they need to read. Made from a flexible and soft silicone hydrogel, Purevision2 for Presbyopia are easy to apply and fit the eye securely and comfortably. This breathable material also allows plenty of oxygen to reach your eyes, ensuring that they remain healthy looking and irritation-free all day. As a monthly multifocal lens, they can be worn for up to 30 consecutive days.