title: Effects of multifocal soft contact lenses used to slow myopia progression on quality of vision in young adults.
abstract: OBJECTIVE
  To assess the effects of multifocal soft contact lenses (MF SCLs) used for myopia control on visual acuity (VA) and subjective quality of vision.
  
  
  METHODS
  Twenty-four young adult myopes had baseline high and low-contrast VAs and refractions measured and quality of vision assessed by the Quality of Vision (QoV) questionnaire with single vision SCLs. Additional VA and QoV questionnaire data were collected immediately after subjects were fitted with Proclear MF SCLs and again after a 2-week adaptation period of daily lens wear. Data were collected for two MF SCL designs, incorporating +1.50 and +3.00 D peripheral near additions, with a week washout period allowed between the two lens trials.
  
  
  RESULTS
  High- and low-contrast VAs were initially reduced with both MF SCL designs, but subsequently improved to be not significantly reduced in the case of high-contrast VA by the end of the 2-week adaptation period. The quality of vision was also reduced, more so with the +3.00 D MF SCL. Quality of Vision (QoV) scores describing frequency, severity and bothersome nature of visual symptoms indicated symptoms worsening rather than resolving over the 2-week period, particularly so with the +3.00 D MF SCL.
  
  
  CONCLUSIONS
  Low and high add MF SCLs adversely affected vision on initial insertion, with sustained effects on low-contrast VA and QoV scores but not high-contrast VA. Thus, high-contrast VA is not a suitable surrogate for quality of vision. In prescribing MF SCLs for myopia control, clinicians should educate patients about these effects on vision.
authors: School of Optometry, University of California, Berkeley, California, USA.|School of Optometry and Vision Science, The University of New South Wales, Sydney, New South Wales, Australia.
authors: Pauline
authors: P
authors: Kang
authors: ABM University Health Board, Swansea, UK.|Flinders University, Adelaide, South Australia, Australia.|Wenzhou Medical University, Wenzhou, China.
authors: Colm
authors: C
authors: McAlinden
authors: School of Optometry, University of California, Berkeley, California, USA.
authors: Christine F
authors: CF
authors: Wildsoet
mesh_terms: D000293:Adolescent; D000328:Adult; D003263:Contact Lenses, Hydrophilic; D015350:Contrast Sensitivity / Q000502:physiology; D018450:Disease Progression; D005260:Female; D019466:Glare; D006801:Humans; D008297:Male; D009216:Myopia / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D017755:Prosthesis Fitting; D012029:Refraction, Ocular / Q000502:physiology; D011795:Surveys and Questionnaires; D014786:Vision Disorders / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D014792:Visual Acuity / Q000502:physiology*; D055815:Young Adult
keywords: multifocal soft contact lenses; myopia; quality of vision; visual acuity