title: Lens-iris diaphragm retropulsion syndrome during phacoemulsification in vitrectomized eyes.
abstract: OBJECTIVE
  To assess the incidence and associations of lens-iris diaphragm retropulsion syndrome (LIDRS) during phacoemulsification in patients who have had vitrectomy.
  
  
  METHODS
  Sunderland Eye Infirmary, Sunderland, United Kingdom.
  
  
  METHODS
  Case series.
  
  
  METHODS
  The LIDRS was categorized into none, mild, and moderate/severe. Unadjusted and adjusted odds ratios (ORs) and 95% confidence intervals (CIs) of increased LIDRS severity were estimated.
  
  
  RESULTS
  Of the 75 eyes (75 patients) included, 35 (46.7%) had no LIDRS and 40 (53.3%) had LIDRS. The odds of increased LIDRS severity decreased significantly with age (OR = 0.92; 95% CI, 0.88-0.97) (P=.001) and increased with increasing axial length (AL) (OR = 3.26; 95% CI, 2.04-5.20) (P<.001) and anterior chamber depth (OR = 6.90; 95% CI, 2.00-23.8) (P=.002). The odds were greater in extensive vitrectomy than in limited vitrectomy (OR = 4.40; 95% CI, 1.64-11.84) (P=.003) and in men than in women (OR = 3.39; 95% CI, 1.40-8.23) (P=.007). The adjusted odds of increased LIDRS severity were significantly greater in extensive vitrectomy than in limited vitrectomy (adjusted OR = 4.42; 95% CI, 1.19-16.45) (P=.027) and with increasing AL (adjusted OR = 3.05; 95% CI, 1.86-5.01) (P<.001).
  
  
  CONCLUSIONS
  Lens-iris diaphragm retropulsion syndrome occurred frequently in eyes with previous vitrectomy. Several identifiable factors had a significant association with the occurrence of LIDRS, and these could be used to help in the preoperative counseling of patients and in surgical planning.
authors.affiliation: From the Sunderland Eye Infirmary (Ghosh, Steel), Sunderland, and the Institute of Health & Society (Best) and Institute of Genetic Medicine (Steel), Newcastle University, Newcastle, United Kingdom. Electronic address: souravg02@yahoo.co.in.
authors.forename: Saurabh
authors.initials: S
authors.lastname: Ghosh
authors.forename: Kate
authors.initials: K
authors.lastname: Best
authors.forename: David H W
authors.initials: DH
authors.lastname: Steel
mesh_terms: D000368:Aged; D000867:Anterior Chamber / Q000473:pathology*; D005260:Female; D006801:Humans; D007431:Intraoperative Complications; D007499:Iris Diseases / Q000209:etiology*; D007905:Lens Diseases / Q000209:etiology*; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000009:adverse effects*; D011446:Prospective Studies; D011680:Pupil; D014821:Vitrectomy