title: A comparative study of the Seiko P-3 and Varilux 2 progressive addition lenses.
abstract: Forty patients were selected to participate in a double-masked comparative study of the Seiko Plax 3 (P-3) and Varilux 2 progressive addition lenses. The study was designed to determine patient preference for either lens design. The patients wore each lens for 1 month. Following each period, a questionnaire relating to the patient's impressions of the lenses was completed. After both wearing periods, the patient's preference was determined. The results show that 89.7% of the patients preferred the Seiko lens over the Varilux. Further, 82.4% chose the Seiko lens and 44.1% chose the Varilux lens over their habitual multifocal design. The results of this study show that, in addition to a preference for the Seiko P-3 design, both progressive addition lenses are viable alternatives to the conventional multifocal lens.
authors.affiliation: Southern California College of Optometry, Fullerton 92631.
authors.forename: K E
authors.initials: KE
authors.lastname: Brookman
authors.forename: E A
authors.initials: EA
authors.lastname: Hall
authors.forename: M J
authors.initials: MJ
authors.lastname: Jensen
mesh_terms: D000368:Aged; D005069:Evaluation Studies as Topic; D005139:Eyeglasses / Q000592:standards*; D005260:Female; D006801:Humans; D006956:Hyperopia / Q000628:therapy; D008297:Male; D009216:Myopia / Q000628:therapy; D055095:Optics and Photonics; D012016:Reference Values