Power Thesaurus. 1969. negotiate thesaurus http://www.powerthesaurus.org/negotiate/synonyms (accessed August 17, 2017).
Youâll see more of the world. iD Single Vision lenses are the first to integrate your lens design on both the front and back surfaces, so you can see more clearly in all directions. Traditionally made single vision lenses have a constant curvature across the front surface, which makes peripheral vision almost impossible.
What bifocal lenses do is bring the eyes to near perfect, if not perfect vision. Perfect vision is equated to 20/20 vision, meaning a person can see objects clearly at 20 feet away. Note, unlike bifocal vision, single vision means a person needs one prescription in their lenses only.