title: Decentration and cataract formation 10 years following posterior chamber silicone phakic intraocular lens implantation.
abstract: OBJECTIVE
  To report a 10-year follow-up for bilateral implantation of a Chiron Adatomed silicone posterior chamber phakic intraocular lens (PIOL).
  
  
  METHODS
  A 32-year-old man presented with bilateral blurred vision and monocular diplopia in the left eye of 2 years' duration.
  
  
  RESULTS
  Slit-lamp microscopy showed bilateral anterior subcapsular cataract and temporal PIOL decentration, and no visible space between the PIOL and crystalline lens in the right eye. After explantation of the posterior chamber PIOL, lens aspiration, and IOL implantation, uncorrected visual acuity improved to 20/15 in the right eye. Scanning electron microscopy examination showed denser deposits on the central portion of the back surface when compared with the edges.
  
  
  CONCLUSIONS
  Long-term follow up of certain designs of posterior chamber PIOLs may reveal late occurrence of complications. Cataract formation may be related to direct contact between the implanted and crystalline lenses.
authors.affiliation: Anterior Segment Division, Department of Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia. angelofsa@yahoo.com
authors.forename: Samar A
authors.initials: SA
authors.lastname: Al-Swailem
authors.forename: Ali A
authors.initials: AA
authors.lastname: Al-Rajhi
mesh_terms: D000328:Adult; D002386:Cataract / Q000209:etiology*; D005500:Follow-Up Studies; D005548:Foreign-Body Migration / Q000209:etiology*; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000009:adverse effects / Q000379:methods*; D007910:Lenses, Intraocular / Q000009:adverse effects*; D008297:Male; D009216:Myopia / Q000601:surgery*; D011183:Postoperative Complications; D012826:Silicone Elastomers / Q000009:adverse effects*; D013997:Time Factors
chemical_list: D012826:Silicone Elastomers