title: Toric intraocular lenses for correction of astigmatism in keratoconus and after corneal surgery.
abstract: OBJECTIVE
  To describe the results of cataract extraction with toric intraocular lens (IOL) implantation in patients with preexisting astigmatism from three corneal conditions (keratoconus, postkeratoplasty, and postpterygium surgery).
  
  
  METHODS
  Cataract patients with topographically stable, fairly regular (although sometimes very high) corneal astigmatism underwent phacoemulsification with implantation of a toric IOL (Zeiss AT TORBI 709, Alcon Acrysof IQ toric SN6AT, AMO Tecnis ZCT). Postoperative astigmatism and refractive outcomes, as well as visual acuities, vector reduction, and complications were recorded for all eyes.
  
  
  RESULTS
  This study evaluated 17 eyes of 16 patients with a mean age of 60 years at the time of surgery. Mean follow-up in this study was 12 months. The corrected distance Snellen visual acuity (with spectacles or contact lenses) 12 months postoperatively was 20/32 or better in 82% of eyes. The mean corneal astigmatism was 6.7 diopters (D) preoperatively, and 1.5 D of refractive cylinder at 1-year follow-up. No vision-compromising intra- or postoperative complications occurred and decentration or off-axis alignment of toric IOLs were not observed.
  
  
  CONCLUSIONS
  Phacoemulsification with toric IOL implantation was a safe and effective procedure in the three mentioned corneal conditions. Patient selection, counseling, and IOL placement with optimal astigmatism correction are crucial.
authors.affiliation: Department of Ophthalmology, Amphia Hospital, Breda; Department of Ophthalmology, Erasmus Medical Center, Rotterdam, the Netherlands.
authors.forename: Ilse Ema
authors.initials: IE
authors.lastname: Mol
authors.affiliation: Department of Ophthalmology, Amphia Hospital, Breda; Department of Ophthalmology, Erasmus Medical Center, Rotterdam, the Netherlands.
authors.forename: Bart Th
authors.initials: BT
authors.lastname: Van Dooren
keywords: corneal astigmatism; keratoconus; phacoemulsification; postkeratoplasty; postpterygium surgery; toric intraocular lens