title: ZB5M anterior chamber and Fyodorov's posterior chamber phakic intraocular lenses: long-term follow-up.
abstract: OBJECTIVE
  To compare the long-term complications of two outdated phakic intraocular lenses (PIOL) implanted in eyes with high myopia to aid development of better PIOL designs.
  
  
  METHODS
  Sixty-two eyes of 37 patients implanted with the ZB5M anterior chamber PIOL (anterior chamber group) and 22 eyes of 14 patients implanted with Fyodorov's posterior chamber PIOL (posterior chamber group) were examined. Complications were compared after a mean follow-up of 71.15 +/- 32.17 months (range: 24 to 145 months) in the anterior chamber group and 84.14 +/- 26.43 months (range: 24 to 132 months) in the posterior chamber group (P = .07).
  
  
  RESULTS
  At last follow-up, pupil ovalization was present in 32 (51.6%) eyes in the anterior chamber group and 1 (4.5%) eye in the posterior chamber group (P < .001), and cataract in 5 (8.1%) eyes in the anterior chamber group and 7 (31.8%) eyes in the posterior chamber group (P = .007). Phakic intraocular lens decentration, glaucoma, retinal detachment, corneal decomposition, and monocular diplopia were additional complications encountered in both groups, with no statistically significant difference.
  
  
  CONCLUSIONS
  Proper understanding of these outdated PIOLs may be helpful in developing better PIOL designs.
authors.affiliation: Beyoglu Eye Education and Research Hospital, Istanbul, Turkey. cananutine@gmail.com
authors.forename: Canan A
authors.initials: CA
authors.lastname: Utine
authors.forename: Sukru
authors.initials: S
authors.lastname: Bayraktar
authors.forename: Vedat
authors.initials: V
authors.lastname: Kaya
authors.forename: Hakan
authors.initials: H
authors.lastname: Eren
authors.forename: Irfan
authors.initials: I
authors.lastname: Perente
authors.forename: Yasar
authors.initials: Y
authors.lastname: Kucuksumer
authors.forename: Mehmet Ali
authors.initials: MA
authors.lastname: Kevser
authors.forename: Omer F
authors.initials: OF
authors.lastname: Yilmaz
mesh_terms: D000328:Adult; D000867:Anterior Chamber / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007908:Lens, Crystalline / Q000502:physiology*; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D011183:Postoperative Complications; D011474:Prosthesis Design; D012189:Retrospective Studies