title: Comparison Over Time of Vault in Chinese Eyes Receiving Implantable Contact Lenses With or Without a Central Hole.
abstract: OBJECTIVE
  To compare the longitudinal vault changes after implantation of a posterior chamber phakic intraocular lens (pIOL) (Visian implantable contact lens) with (ICL V4c) and without (ICL V4) a central artificial hole for moderate to high myopia in Chinese eyes.
  
  
  METHODS
  Retrospective case series.
  
  
  METHODS
  This study comprised 78 eyes implanted with the ICL V4c model and 82 eyes implanted with the ICL V4 model at our department by the same surgeon. The time course of the postoperative pIOL vault changes was quantitatively assessed using ultrasound biomicroscopy over 6 months.
  
  
  RESULTS
  There was a trend toward a decrease in all measures of central vault, peripheral vault, and the endothelium-anterior pIOL distance for both central hole pIOL and conventional pIOL over time, although the variance was not statistically significant (all P > .05). There were no significant between-group differences in the amount of the pIOL central vault, peripheral vault, or the endothelium-anterior pIOL distance at any time point after surgery (all P > .05).
  
  
  CONCLUSIONS
  The time course of the central hole pIOL vault changes is essentially equivalent to that of the conventional pIOL vault, suggesting that the presence of the central hole did not significantly affect the pIOL position.
authors.affiliation: Department of Ophthalmology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Xinfang
authors.initials: X
authors.lastname: Cao
authors.affiliation: Department of Orthopedics, Children's Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Weiliang
authors.initials: W
authors.lastname: Wu
authors.affiliation: Department of Ophthalmology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Ophthalmology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Xie
authors.affiliation: Department of Ophthalmology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China. Electronic address: idrshen@zju.edu.cn.
authors.forename: Ye
authors.initials: Y
authors.lastname: Shen
mesh_terms: D000328:Adult; D003261:Contact Lenses; D003315:Cornea / Q000473:pathology* / Q000601:surgery; D019781:Corneal Topography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D033401:Microscopy, Acoustic; D008875:Middle Aged; D009216:Myopia / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D054120:Phakic Intraocular Lenses; D011474:Prosthesis Design; D012029:Refraction, Ocular; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D014792:Visual Acuity; D055815:Young Adult