title: Long-term Staar toric intraocular lens rotational stability.
abstract: OBJECTIVE
  To evaluate the long-term rotational stability of Staar toric intraocular lens (IOL) implants from two weeks after cataract surgery until two weeks after laser posterior capsulotomy.
  
  
  METHODS
  Retrospective interventional case series.
  
  
  METHODS
  One hundred and fifteen eyes of 72 patients were implanted with Staar toric IOL models AA4203TF and AA4203TL (Staar Surgical Co, Monrovia, California, USA) between November 1998 and November 2004. Forty-two (36.5%) of the 115 eyes underwent laser capsulotomy because of clinically significant posterior capsule opacification. Slit-lamp retroillumination photographs were obtained in 25 eyes two weeks after cataract surgery and again two weeks after capsulotomy to document IOL axis alignment.
  
  
  RESULTS
  The mean difference in axis alignment before and after posterior capsulotomy was 1.36 degrees. In no case did the axis change more than 5 degrees. This amount is within the expected range of measurement error using a slit-lamp photographic technique for axis measurement.
  
  
  CONCLUSIONS
  There are no long-term changes in Staar toric IOL axis orientation beyond the two-week postoperative time point after cataract surgery. The rotational stability extends through laser posterior capsulotomy.
authors.affiliation: Jules Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA.
authors.forename: Mario
authors.initials: M
authors.lastname: Jampaulo
authors.forename: Michael D
authors.initials: MD
authors.lastname: Olson
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Miller
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007903:Lens Capsule, Crystalline / Q000601:surgery; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D012189:Retrospective Studies; D012399:Rotation