Ardaya, David The effect of add power on distance vision with the acuvue bifocal contact lens. [electronic resource] - Optometry (St. Louis, Mo.) Mar 2004 - 169-74 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 1529-1839 Standard No.: 10.1016/s1529-1839(04)70036-6 doi Subjects--Topical Terms: AdultContact Lenses, HydrophilicContrast Sensitivity--physiologyDouble-Blind MethodHumansProsthesis FittingRefraction, OcularVisual Acuity--physiology