title: Posterior chamber phakic implantable collamer lens: changes in vault during 1 year.
abstract: OBJECTIVE
  To evaluate the changes in vault over time after Implantable Collamer Lens (ICL; STAAR Surgical) posterior chamber phakic intraocular lens implantation.
  
  
  METHODS
  A total of 36 eyes of 19 patients who underwent ICL implantation were enrolled in the study. Vault (the distance between the back surface of the ICL and the front surface of the crystalline lens) was measured postoperatively using anterior optical coherence tomography. Patients were divided into three groups based on vault (low < or =0.25 mm, moderate >0.25 to <0.75 mm, or high > or =0.75 mm).
  
  
  RESULTS
  Mean vault at 1 year postoperative was 0.53+/-0.25 mm. The percentages of eyes in the low, moderate, and high vault groups were 13.9%, 72.2%, and 13.9%, respectively. A significant decrease in vault was noted up to 1 month, after which the value stabilized (P<.0001). High vault showed a gradual decrease up to 3 months (P<.0001), after which the value stabilized. A statistically significant correlation was present between the change noted for vault values during the 1-year follow-up period and those measured for the initial vault on postoperative day 1 (P<.0001, r(2)=0.6393).
  
  
  CONCLUSIONS
  Although values for low and moderate vault exhibited little change after ICL implantation, high vault tended to decrease over time and became stable at 3 months after surgery.
authors.affiliation: Department of Ophthalmology, Social Insurance Chukyo Hospital, 1-1-10 Sanjo, Minami-ku, Nagoya, Aichi, Japan. tkojkoj@mac.com
authors.forename: Takashi
authors.initials: T
authors.lastname: Kojima
authors.forename: Masahiro
authors.initials: M
authors.lastname: Maeda
authors.forename: Yoko
authors.initials: Y
authors.lastname: Yoshida
authors.forename: Mayuka
authors.initials: M
authors.lastname: Ito
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Nakamura
authors.forename: Shuya
authors.initials: S
authors.lastname: Hara
authors.forename: Kazuo
authors.initials: K
authors.lastname: Ichikawa
mesh_terms: D000328:Adult; D002386:Cataract / Q000209:etiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D054120:Phakic Intraocular Lenses / Q000009:adverse effects*; D011183:Postoperative Complications