title: Effect of a capsular tension ring on axial intraocular lens position.
abstract: OBJECTIVE
  To assess the effect of a capsular tension ring (CTR) on the postoperative anterior chamber depth (ACD).
  
  
  METHODS
  Vienna Institute for Research in Ocular Surgery, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria.
  
  
  METHODS
  Prospective observer- and patient-masked randomized trial.
  
  
  METHODS
  Bilateral small-incision cataract surgery with implantation of a hydrophobic acrylic single-piece intraocular lens (IOL) (Tecnis ZCB00) was performed using a standard technique. Each patient received a CTR in 1 eye (CTR group) and no CTR in the fellow eye (control group). The ACD was measured preoperatively with biometry (IOLMaster 500) and at 1 hour and 12 weeks postoperatively using partial coherence interferometry (ACMaster). The subjective refraction was assessed at 12 weeks.
  
  
  RESULTS
  Sixty eyes (30 patients) were included. Preoperatively, the mean axial length was 23.36 mm ± 1.55 (SD) (range 21.01 to 29.46 mm) in the CTR group and 23.37 ± 1.70 mm (range 21.14 to 28.84 mm) in the control group and the mean ACD was 3.06 ± 0.45 mm (range 2.25 to 4.16 mm) and 3.03 ± 0.47 mm (range 2.18 to 4.10 mm), respectively. The differences were not statistically significant (P=.148 and P=.074, respectively). The mean postoperative ACD was 4.83 ± 0.46 mm (range 3.84 to 5.76 mm) in the CTR group and 4.81 ± 0.43 mm (range 3.67 to 5.65 mm) in the control group. The difference between the groups was not statistically significant (P=.329).
  
  
  CONCLUSIONS
  Implantation of a CTR had no significant influence on the postoperative axial IOL position.
  
  
  BACKGROUND
  No author has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From the Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute (Weber, Hirnschall, Rigal, Findl), Hanusch Hospital, Vienna, Austria; Moorfields Eye Hospital NHS Foundation Trust (Findl), London, United Kingdom.
authors.forename: Maria
authors.initials: M
authors.lastname: Weber
authors.affiliation: From the Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute (Weber, Hirnschall, Rigal, Findl), Hanusch Hospital, Vienna, Austria; Moorfields Eye Hospital NHS Foundation Trust (Findl), London, United Kingdom.
authors.forename: Nino
authors.initials: N
authors.lastname: Hirnschall
authors.affiliation: From the Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute (Weber, Hirnschall, Rigal, Findl), Hanusch Hospital, Vienna, Austria; Moorfields Eye Hospital NHS Foundation Trust (Findl), London, United Kingdom.
authors.forename: Karl
authors.initials: K
authors.lastname: Rigal
authors.affiliation: From the Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute (Weber, Hirnschall, Rigal, Findl), Hanusch Hospital, Vienna, Austria; Moorfields Eye Hospital NHS Foundation Trust (Findl), London, United Kingdom. Electronic address: oliver@findl.at.
authors.forename: Oliver
authors.initials: O
authors.lastname: Findl
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000033:anatomy & histology*; D001699:Biometry; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007368:Interferometry; D007903:Lens Capsule, Crystalline / Q000601:surgery*; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011184:Postoperative Period; D011446:Prospective Studies; D019736:Prostheses and Implants; D019919:Prosthesis Implantation