title: Late opacification in hydrophilic acrylic intraocular lenses: analysis of 87 eyes in a random sample of 102 patients.
abstract: OBJECTIVE
  To report the incidence of late postoperative opacification of a hydrophilic acrylic foldable intraocular lens (IOL).
  
  
  METHODS
  Altino Ventura Foundation, Pernambuco, Brazil.
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  Patients were examined 4 years after phacoemulsification with Ioflex IOL implantation in the rural areas of Pernambuco, Brazil, as part of a community campaign for underprivileged people. The patients had a detailed ophthalmic examination to detect late IOL opacification. The patients' charts were reviewed for preexisting ocular pathology and corrected distance visual acuity (CDVA) before and 1 month after surgery. The IOL opacification was classified according to its location and severity.
  
  
  RESULTS
  All surgeries were uneventful intraoperatively and postoperatively. Six (7%) of the 87 eyes (58 patients) examined had a diagnosis of late IOL opacification; asteroid hyalosis and high myopia were associated ocular findings in 2 of the eyes. The preoperative CDVA ranged from hand motions (HM) to 20/80. The postoperative CDVA ranged from 20/20 to 20/40 except in 1 eye with posterior segment disease. Over the 4-year follow-up, 2 of the 6 eyes had a decrease in visual acuity to HM and 20/80, respectively, as a result of late IOL opacification. They had IOL replacement and CDVA improved to 20/60 and 20/20, respectively. A third eye with severe late opacification was not referred for IOL replacement because of macular disease.
  
  
  CONCLUSIONS
  Intraocular lens opacification was observed in 7% of the eyes studied. No risk factors could be determined.
authors: Altino Ventura Foundation, Recife, Brazil. prialmeida.j@gmail.com
authors: Priscilla de Almeida
authors: Pde A
authors: Jorge
authors: Delano
authors: D
authors: Jorge
authors: Camila Vieira
authors: CV
authors: Ventura
authors: Bruna Vieira
authors: BV
authors: Ventura
authors: Wagner
authors: W
authors: Lira
authors: Marcelo Carvalho
authors: MC
authors: Ventura
authors: Liliana
authors: L
authors: Werner
authors: Newton
authors: N
authors: Kara
mesh_terms: D000180:Acrylic Resins; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D015994:Incidence; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D018918:Phacoemulsification; D019904:Polymethyl Methacrylate; D011183:Postoperative Complications; D011446:Prospective Studies; D011475:Prosthesis Failure; D012086:Reoperation; D012307:Risk Factors; D014792:Visual Acuity / Q000502:physiology
chemical_list: D000180:Acrylic Resins; D019904:Polymethyl Methacrylate