title: Decentration of 5.1 mm intraocular lenses after continuous curvilinear capsulorhexis and in-the-bag fixation.
abstract: OBJECTIVE
  To determine the incidence of decentration in eyes with 5.1 mm optic intraocular lenses (IOLs) and to assess the effect on vision.
  
  
  METHODS
  Clinical Cataract Research Unit, Oxford Eye Hospital, Oxford, England.
  
  
  METHODS
  Patients having phacoemulsification and small IOL implantation over 12 months were identified and invited for assessment. Intraocular lens decentration was measured geometrically using a modified, digital, retroillumination camera. The expected incidence of symptoms caused by decentration was estimated by determining the presence of an IOL edge within an artificial pupil overlaid on the digital image.
  
  
  RESULTS
  In 13 eyes (20%), IOL decentration was more than 0.5 mm. Symptoms were expected in 38 patients (59%) but occurred in only 14 (22%).
  
  
  CONCLUSIONS
  Decentration of the 5.1 mm optic IOL caused fewer clinical problems than anticipated, although the results raise concerns that such IOLs may be inappropriate in patients who need excellent vision in scotopic illumination.
authors.affiliation: Clinical Cataract Research Unit, Oxford Eye Hospital, England.
authors.forename: C K
authors.initials: CK
authors.lastname: Patel
authors.forename: P
authors.initials: P
authors.lastname: Rosen
authors.forename: N A
authors.initials: NA
authors.lastname: Brown
authors.forename: A J
authors.initials: AJ
authors.lastname: Bron
mesh_terms: D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D005548:Foreign-Body Migration / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D015994:Incidence; D007903:Lens Capsule, Crystalline / Q000601:surgery*; D007910:Lenses, Intraocular; D008297:Male; D018918:Phacoemulsification / Q000009:adverse effects* / Q000379:methods; D010865:Pilot Projects; D011183:Postoperative Complications; D011680:Pupil; D014792:Visual Acuity