title: The effect of excessive add power on the acceptance of progressive addition lenses.
abstract: Twenty-nine subjects wearing Varilux Plus (Varilux 2) or Varilux Infinity lenses were drawn from the UAB School of Optometry primary care clinic population. Using a double-masked, randomized cross-over design, subjects wore one pair of progressive addition lenses (PALs) with a normal add and one pair with the add overplussed by 0.50 D. Subjects wore each pair of lenses for 1 week. Twenty-five of the 29 patients preferred the normal add over the overplussed add. In all subjective response categories the normal add was rated higher than the overplussed add.
authors.affiliation: School of Optometry, University of Alabama, Birmingham 35294.
authors.forename: M H
authors.initials: MH
authors.lastname: Cho
authors.forename: C H
authors.initials: CH
authors.lastname: Spear
authors.forename: L
authors.initials: L
authors.lastname: Caplan
mesh_terms: D000328:Adult; D000368:Aged; D004311:Double-Blind Method; D005139:Eyeglasses; D006801:Humans; D008875:Middle Aged; D055095:Optics and Photonics; D009988:Orthoptics; D010342:Patient Acceptance of Health Care; D017060:Patient Satisfaction; D014786:Vision Disorders / Q000628:therapy