title: Secondary iris claw intraocular lens implantation for the correction of aphakia after pars plana vitrectomy.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the safety and efficacy of iris claw intraocular lens implantation for correction of aphakia in vitrectomized eyes without capsular support.
  
  
  METHODS
  This was a prospective interventional case series. Twelve aphakic vitrectomized eyes without capsular support underwent iris claw intraocular lens implantation. The main outcome measures were changes in uncorrected visual acuity, best-corrected visual acuity, spheric equivalent, corneal endothelial cell density, corneal thickness, central macular thickness, and complications.
  
  
  RESULTS
  Mean follow-up was 15.58 +/- 3.80 months with no intraoperative complications. Postoperatively, uncorrected visual acuity increased significantly at all follow-up visits (P < 0.05). Mean best-corrected visual acuity increased 10 letters/2 lines at the final follow-up visit (P = 0.023). Mean postoperative spheric equivalent at the last visit was -1.68 +/- 063 D, and the spheric equivalent was within +/-2.00 D of emmetropia in 9 (75%) eyes. Mean central macular thickness increased only at postoperative Month 3 (P = 0.043). Mean endothelial cell density loss was 23.87% at the last visit. Mean corneal thickness did not change during follow-up (P > 0.05). No corneal edema was observed. Complications were transient intraocular pressure increase (n = 1), cystoid macular edema (n = 1), and haptic dislocation replaced by surgery (n = 1). Retinas remained attached in all eyes.
  
  
  CONCLUSIONS
  Secondary iris claw intraocular lens implantation is clinically safe and effective to correct aphakia in vitrectomized eyes without capsular support. Larger studies with longer follow-up are warranted.
authors.affiliation: Beyoglu Eye Research and Training Hospital, Istanbul, Turkey. nur.nuracar@gmail.com
authors.forename: Nur
authors.initials: N
authors.lastname: Acar
authors.forename: Ziya
authors.initials: Z
authors.lastname: Kapran
authors.forename: Tugrul
authors.initials: T
authors.lastname: Altan
authors.forename: Yasar
authors.initials: Y
authors.lastname: Kucuksumer
authors.forename: Yaprak Banu
authors.initials: YB
authors.lastname: Unver
authors.forename: Evrim
authors.initials: E
authors.lastname: Polat
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001036:Aphakia, Postcataract / Q000503:physiopathology / Q000601:surgery*; D002452:Cell Count; D004728:Endothelium, Corneal / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D007498:Iris / Q000601:surgery*; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011446:Prospective Studies; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology; D014821:Vitrectomy; D055815:Young Adult