title: Characteristics of patients with spontaneous dislocation of in-the-bag intraocular lens after pars plana vitrectomy.
abstract: OBJECTIVE
  To determine the characteristics of eyes with late in-the-bag dislocation of an intraocular lens (IOL) after pars plana vitrectomy (PPV).
  
  
  METHODS
  Fourteen eyes of 14 patients with a dislocated IOL after PPV were studied retrospectively. The data collected from the medical charts included the age, sex, history of eye diseases, axial length, and interval from PPV to time of IOL dislocation. The surgical procedures used during the PPV were also recorded.
  
  
  RESULTS
  Seven eyes had undergone PPV for rhegmatogenous retinal detachment; 6 eyes, for proliferative diabetic retinopathy; and 1 eye, for retinal vein occlusion. The average interval between the PPV and the diagnosis of the dislocated IOL was 6.2 years (range 2.3-10.1 years). In all eyes, the peripheral vitreous was thoroughly removed with scleral depression during the PPV.
  
  
  CONCLUSIONS
  The IOL dislocation was most likely caused by damage to the zonular fibers by the peripheral vitrectomy with scleral depression.
authors.affiliation: Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-0856, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Koike
authors.affiliation: Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-0856, Japan. babatakayuki@nifty.com.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Baba
authors.affiliation: Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-0856, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nizawa
authors.affiliation: Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-0856, Japan.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Oshitari
authors.affiliation: Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-0856, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Yamamoto
mesh_terms: D000368:Aged; D002386:Cataract / Q000150:complications*; D005260:Female; D005500:Follow-Up Studies; D005548:Foreign-Body Migration / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D006801:Humans; D007910:Lenses, Intraocular / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D012086:Reoperation; D012163:Retinal Detachment / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D012189:Retrospective Studies; D013997:Time Factors; D014792:Visual Acuity; D014821:Vitrectomy / Q000009:adverse effects*
keywords: Dislocation; In-the-bag; Intraocular lens; Pars plana vitrectomy