According to Adam Gordon, an associate professor in the School of Optometry, bifocal glasses can prove handy, but for those who wear contacts, presbyopia has been an annoying part of aging. This problem can be resolved through the new multifocal lenses, which are made with silicone hydrogel polymer, a more breathable and safer material than older soft-lens polymers, Gordon said. Cutting-edge laser technology used in these lenses improves focus on nearby objects.