title: Scanning electron microscopy analysis of a sputnik-like intraocular lens 28 years after implantation.
abstract: OBJECTIVE
  To report a pupil-supported, iris-clip intraocular lens (IOL) that was explanted more than 28 years after implantation.
  
  
  METHODS
  A pupil-supported, iris-clip, Sputnik-like IOL was implanted in the left eye of a 33-year-old man to correct aphakia after extracapsular cataract extraction due to trauma.
  
  
  RESULTS
  Twenty-eight years after implantation, the patient was referred to our center with loss of vision. Clinical examination showed dislocation of the IOL, which was subsequently explanted. Scanning electron microscopic examination showed a transparent, polymethylmethacrylate (PMMA), pupil-supported, iris-clip IOL with melanosomes and cell deposits (foreign-body reaction) on its surface.
  
  
  CONCLUSIONS
  This case demonstrates the inertness of PMMA material and reports that a foreign body reaction can be induced following IOL dislocation 28 years after implantation.
authors.affiliation: Departamento Biología Molecular, VISSUM, Instituto Oftalmológico de Alicante, Alicante, Spain. cferrer@vissum.com
authors.forename: Consuelo
authors.initials: C
authors.lastname: Ferrer
authors.forename: Sabat K
authors.initials: SK
authors.lastname: Abu-Mustafa
authors.forename: Jorge L
authors.initials: JL
authors.lastname: Alió
mesh_terms: D001036:Aphakia, Postcataract / Q000601:surgery; D020878:Device Removal; D005549:Foreign-Body Reaction / Q000473:pathology; D015726:Giant Cells / Q000648:ultrastructure; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008264:Macrophages / Q000648:ultrastructure; D008297:Male; D020460:Melanosomes / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D019904:Polymethyl Methacrylate; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013997:Time Factors
chemical_list: D019904:Polymethyl Methacrylate