title: Intraocular pressure after implantation of the Visian Implantable Collamer Lens With CentraFLOW without iridotomy.
abstract: OBJECTIVE
  To compare the intraocular pressure (IOP) values during a 3-month period after implantation of the new Visian Implantable Collamer Lens (ICL; STAAR Surgical Company, Nidau, Switzerland) V4c design with CentraFLOW technology without iridotomy using a standard procedure followed by implantation of the conventional ICL V4b model.
  
  
  METHODS
  Retrospective cohort study.
  
  
  METHODS
  This study included 17 eyes implanted with the ICL V4b model and 18 eyes implanted with the ICL V4c model. The mean preoperative spherical equivalent refractions were -7.48 ± 5.00 diopters and -8.66 ± 4.2 diopters, respectively. We compared the best-corrected distance visual acuity before surgery with the uncorrected distance visual acuity after surgery. The intraocular pressure (IOP) was measured 1 week, 1 month, and 3 months after surgery. The central vault at 3 months was measured using optical coherence tomography.
  
  
  RESULTS
  Three months after surgery, the mean uncorrected distance visual acuities were -0.09 ± 0.12 logarithm of the minimal angle of resolution units with the V4b and -0.07 ± 0.11 logarithm of the minimal angle of resolution units with the V4c. The mean distances between the ICL and the anterior crystalline lens surface were 557 ± 224 μm and 528 ± 268 μm for the V4b and V4c, respectively (P = .73). After 1 week and 1 month, the mean IOPs were 13.7 and 13.3 mm Hg and 14.7 and 15.1 mm Hg, respectively. There were no significant differences in IOP within or between groups during the follow-up period (P > .05, for all comparisons).
  
  
  CONCLUSIONS
  The new ICL with the CentraFLOW design seems to provide similar results as its predecessors for the correction of moderate to high myopia and maintenance of safe IOP levels without iridotomy.
authors.affiliation: Department of Optics and Optometry, Universidad Europea de Madrid, Madrid, Spain.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Higueras-Esteban
authors.forename: Amanda
authors.initials: A
authors.lastname: Ortiz-Gomariz
authors.forename: Ramón
authors.initials: R
authors.lastname: Gutiérrez-Ortega
authors.forename: César
authors.initials: C
authors.lastname: Villa-Collar
authors.forename: Juan P
authors.initials: JP
authors.lastname: Abad-Montes
authors.forename: Paulo
authors.initials: P
authors.lastname: Fernandes
authors.forename: José M
authors.initials: JM
authors.lastname: González-Méijome
mesh_terms: D000328:Adult; D019781:Corneal Topography; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D032801:Iridectomy; D007498:Iris / Q000601:surgery; D053844:Lasers, Solid-State / Q000627:therapeutic use; D019654:Lens Implantation, Intraocular / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D054120:Phakic Intraocular Lenses; D011474:Prosthesis Design; D012029:Refraction, Ocular / Q000502:physiology; D012189:Retrospective Studies; D041623:Tomography, Optical Coherence; D014065:Tonometry, Ocular; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology