title: Comparison of visual outcomes of 2 diffractive trifocal intraocular lenses.
abstract: OBJECTIVE
  To compare the visual outcomes after cataract surgery with bilateral implantation of 1 of 2 diffractive trifocal intraocular lenses (IOLs).
  
  
  METHODS
  Two clinical centers, Lisbon, Portugal.
  
  
  METHODS
  Prospective comparative case series.
  
  
  METHODS
  Phacoemulsification with bilateral implantation of a Finevision Micro F IOL (Group 1) or an AT Lisa tri 839 MP IOL (Group 2) was performed. Over a 3-month follow-up, the main outcome measures were uncorrected distance visual acuity (UDVA), corrected monocular and binocular distance visual acuity, uncorrected intermediate visual acuity at 80 cm, distance-corrected intermediate visual acuity (DCIVA), uncorrected near visual acuity at 40 cm, distance-corrected near visual acuity (DCNVA), spherical equivalent (SE) refraction, defocus curves, contrast sensitivity, presence of dysphotopsia, and use of spectacles.
  
  
  RESULTS
  Each group comprised 30 eyes (15 patients). The mean values at 3 months were UDVA, 0.03 logMAR ± 0.08 (SD) (Group 1) and 0.08 ± 0.12 (Group 2) (P = .765); DCIVA, 0.04 ± 0.07 logMAR and 0.18 ± 0.18 logMAR, respectively (P = .048); DCNVA, 0.03 ± 0.06 logMAR and 0.11 ± 0.08 logMAR, respectively (P = .032); SE, -0.25 ± 0.30 diopter (D) and -0.02 ± 0.39 D, respectively (P = .087). There was no significant difference in contrast sensitivity or dysphotopic phenomena between groups.
  
  
  CONCLUSIONS
  Both trifocal IOL models provided excellent distance, intermediate, and near visual outcomes. Monocular DCIVA and DCNVA appeared slightly better in Group 1. Predictability of the refractive results and optical performance were excellent, and all patients achieved spectacle independence.
  
  
  BACKGROUND
  Neither author has a financial or proprietary interest in any material or method mentioned.
authors: From the Cruz Vermelha Hospital (Marques) and Egas Moniz Hospital (Ferreira), Lisbon, Portugal. Electronic address: em.lx@netcabo.pt.
authors: Eduardo F
authors: EF
authors: Marques
authors: From the Cruz Vermelha Hospital (Marques) and Egas Moniz Hospital (Ferreira), Lisbon, Portugal.
authors: Tiago B
authors: TB
authors: Ferreira
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015350:Contrast Sensitivity / Q000502:physiology; D005260:Female; D019466:Glare; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011446:Prospective Studies; D011474:Prosthesis Design; D012029:Refraction, Ocular / Q000502:physiology*; D015348:Vision, Binocular / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology*