Maltzman, B A Experience with soft bifocal contact lenses. [electronic resource] - The CLAO journal : official publication of the Contact Lens Association of Ophthalmologists, Inc - 73-7 p. digital Publication Type: Journal Article ISSN: 0733-8902 Subjects--Topical Terms: Contact Lenses, HydrophilicHumansHyperopia--therapyMyopia--therapyPresbyopia--therapy