Purevision2 hd for presbyopia are the latest addition to bausch lombs popular range of contact lenses designed to provide clear high definition vision at all distances these lenses are perfect for those who suffer from presbyopia and look for an alternative to their bifocals or reading glasses purevision2 hd for presbyopia contact lenses are made from silicone hydrogel a material which enhances oxygen transmission ensuring long lasting hydration to your eyes in addition these multifo