title: Comparative study of 2 types of implantable collamer lenses, 1 with and 1 without a central artificial hole.
abstract: OBJECTIVE
  To compare the outcomes between implantable collamer lenses (ICLs), 1 with and 1 without a central artificial hole.
  
  
  METHODS
  Comparative study.
  
  
  METHODS
  We included 65 eyes of 65 patients with refractive error in our study. The mean manifest refraction spherical equivalent (MRSE) was -9.32 ± 4.02 diopters (range, 6.75 to -16.50 diopters). We divided patients into 2 groups based on the type of ICL used, 1 for those without a central artificial hole (Group I, 21 eyes) and 1 for those with a hole (Group II, 44 eyes). The postoperative changes in visual acuity, endothelial cell density, MRSE, higher order aberrations readings, and objective scatter index between the 2 kinds of ICLs were compared. The follow-up period was 3 months.
  
  
  RESULTS
  There were no statistically significant differences in the postoperative changes in uncorrected distance visual acuity (P = 0.81), corrected distance visual acuity (P = 0.24), MRSE (P = 0.18), and endothelial cell density (P = 0.76) between the groups. Also, no difference in objective scatter index was found at 3 months (P = 0.32). None of the higher order aberrations readings showed any significant difference between the groups.
  
  
  CONCLUSIONS
  There were no significant differences between the outcomes of these ICLs, either with or without a central artificial hole.
authors: Shinagawa LASIK Center, Tokyo, Japan.
authors: Tukezban
authors: T
authors: Huseynova
authors: Shinagawa LASIK Center, Tokyo, Japan.
authors: Shu
authors: S
authors: Ozaki
authors: Shinagawa LASIK Center, Tokyo, Japan.
authors: Tatsuya
authors: T
authors: Ishizuka
authors: Shinagawa LASIK Center, Tokyo, Japan.
authors: Mariko
authors: M
authors: Mita
authors: Shinagawa LASIK Center, Tokyo, Japan; Department of Ophthalmology, Wenzhou Medical College, Wenzhou, China. Electronic address: tomita@shinagawa-lasik.com.
authors: Minoru
authors: M
authors: Tomita
mesh_terms: D057128:Aberrometry; D000293:Adolescent; D000328:Adult; D001672:Biocompatible Materials; D002452:Cell Count; D004728:Endothelium, Corneal / Q000473:pathology; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D032801:Iridectomy; D053844:Lasers, Solid-State / Q000627:therapeutic use; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D054120:Phakic Intraocular Lenses; D011474:Prosthesis Design; D012029:Refraction, Ocular / Q000502:physiology; D012189:Retrospective Studies; D016896:Treatment Outcome; D015348:Vision, Binocular / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology*; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials