title: Bilateral mix-and-match versus unilateral multifocal intraocular lens implantation: long-term comparison.
abstract: OBJECTIVE
  To compare the visual outcomes and subjective satisfaction levels of patients who had bilateral mix-and-match implantation or monocular implantation of multifocal intraocular lenses (IOLs).
  
  
  METHODS
  Asan Medical Center, Seoul, South Korea.
  
  
  METHODS
  Retrospective comparative case series.
  
  
  METHODS
  Patients had implantation of a diffractive multifocal IOL (Tecnis ZM900) in 1 eye and a refractive multifocal IOL (Rezoom NXG1) in the other eye via the mix-and-match approach or of a Tecnis ZM900 IOL in 1 eye only. After 1 year, the uncorrected distance visual acuity (UDVA), uncorrected intermediate visual acuity (UIVA), uncorrected near visual acuity (UNVA), and contrast sensitivity were evaluated. Patient satisfaction, spectacle dependence, and halo and glare symptoms were also evaluated.
  
  
  RESULTS
  Twenty-three patients were evaluated. One year postoperatively, the mean values in the bilateral group and unilateral group were, respectively, binocular UDVA, 0.10 logMAR ± 0.18 (SD) and 0.10 ± 0.13 logMAR (P=.574); UIVA, 0.23 ± 0.12 logMAR and 0.29 ± 0.14 logMAR (P=.127); UNVA, 0.25 ± 0.18 logMAR and 0.27 ± 0.25 logMAR (P=.926). Subjective patient satisfaction was slightly higher in the bilateral implantation group (P=.083). There were no significant differences in contrast sensitivity, spectacle dependency, halos, or glare.
  
  
  CONCLUSIONS
  There were no significant differences in postoperative visual acuity, subjective patient satisfaction, spectacle independence, or other visual symptoms between patients who had bilateral or unilateral implantation of multifocal IOLs. Unilateral implantation of a multifocal IOL is an option to lower spectacle dependency and increase patient satisfaction.
authors.affiliation: From the Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Sam Young
authors.initials: SY
authors.lastname: Yoon
authors.forename: In Seok
authors.initials: IS
authors.lastname: Song
authors.forename: Jae Yong
authors.initials: JY
authors.lastname: Kim
authors.forename: Myoung Joon
authors.initials: MJ
authors.lastname: Kim
authors.forename: Hungwon
authors.initials: H
authors.lastname: Tchah
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015350:Contrast Sensitivity / Q000502:physiology*; D005139:Eyeglasses / Q000706:statistics & numerical data; D005260:Female; D005500:Follow-Up Studies; D019466:Glare; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D018918:Phacoemulsification; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*; D012029:Refraction, Ocular / Q000502:physiology; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology*