title: Astigmatism management in cataract surgery with Precizon(®) toric intraocular lens: a prospective study.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the visual and refractive outcomes and rotational stability of the new aspheric Precizon(®) toric intraocular lens (IOL) for the correction of corneal astigmatism in cataract surgery.
  
  
  METHODS
  Department of Ophthalmology, Hospital Geral de Santo António - Centro Hospitalar do Porto, EPE and Hospital de Pedro Hispano, Matosinhos, Portugal.
  
  
  METHODS
  This was a prospective clinical study.
  
  
  METHODS
  A total of 40 eyes of 27 patients with corneal astigmatism greater than 1.0 diopter (D) underwent cataract surgery with implantation of Precizon(®) toric IOL. IOL power calculation was performed using optical coherence biometry (IOLMaster(®)). Outcomes of uncorrected (UDVA) and best-spectacle corrected distance visual acuities (BCDVA), refraction, and IOL rotation were analyzed at the 1st week, 1st, 3rd, and 6th month's evaluations.
  
  
  RESULTS
  The median postoperative UDVA was better than preoperative best-spectacle corrected distance visual acuity (0.02 [0.06] logMAR vs 0.19 [0.20] logMAR, P<0.001). At 6 months, postoperative UDVA was 0.1 logMAR or better in 95% of the eyes. At last follow-up, the mean spherical equivalent was reduced from -3.35±3.10 D to -0.02±0.30 D (P<0.001) with 97.5% of the eyes within ±0.50 D of emmetropia. The mean preoperative keratometric cylinder was 2.34±0.95 D and the mean postoperative refractive cylinder was 0.24±0.27 D (P<0.001). The mean IOL rotation was 2.43°±1.55°. None of the IOLs required realignment.
  
  
  CONCLUSIONS
  Precizon(®) toric IOL revealed very good rotational stability and performance regarding predictability, efficacy, and safety in the correction of preexisting regular corneal astigmatism associated with cataract surgery.
authors: Department of Ophthalmology, Hospital Geral de Santo António - Centro Hospitalar do Porto, EPE, Porto, Portugal.
authors: Carolina
authors: C
authors: Vale
authors: Department of Ophthalmology, Hospital de Pedro Hispano, Matosinhos, Portugal.
authors: Carlos
authors: C
authors: Menezes
authors: Public Health Unit, ACES - Porto Ocidental, Porto, Portugal.
authors: J
authors: J
authors: Firmino-Machado
authors: Department of Ophthalmology, Hospital de Pedro Hispano, Matosinhos, Portugal.
authors: Pedro
authors: P
authors: Rodrigues
authors: Department of Ophthalmology, Hospital Geral de Santo António - Centro Hospitalar do Porto, EPE, Porto, Portugal.
authors: Miguel
authors: M
authors: Lume
authors: Department of Ophthalmology, Hospital de Pedro Hispano, Matosinhos, Portugal.
authors: Paula
authors: P
authors: Tenedório
authors: Department of Ophthalmology, Hospital Geral de Santo António - Centro Hospitalar do Porto, EPE, Porto, Portugal.
authors: Pedro
authors: P
authors: Menéres
authors: Department of Ophthalmology, Hospital Geral de Santo António - Centro Hospitalar do Porto, EPE, Porto, Portugal.
authors: Maria do Céu
authors: Mdo C
authors: Brochado
keywords: astigmatism; cataract surgery; implantation outcomes; stability; toric intraocular lens