title: Clinical results of posterior chamber phakic intraocular lens implantation in eyes with low anterior chamber depth.
abstract: OBJECTIVE
  To investigate visual outcomes of Visian implantable Collamer lens (ICL) implantation in eyes with a shallow anterior chamber depth (ACD).
  
  
  METHODS
  Retrospective, noncomparative, interventional case series.
  
  
  METHODS
  Medical charts of the patients with a low ACD of 2.8 mm or less who underwent implantable Collamer lens implantation were reviewed. To evaluate efficacy and safety, preoperative and postoperative uncorrected visual acuity, manifest refractive spherical equivalent (MRSE), endothelial cell count, intraocular pressure, angle opening distance at 500 μm from the scleral spur, trabecular-iris angle, and postoperative central vault were analyzed.
  
  
  RESULTS
  The mean follow-up period for 18 eyes of 10 patients was 24.67 ± 15.09 months (range, 10 to 51 months). The preoperative ACD was 2.71 ± 0.08 mm (range, 2.42 to 2.79 mm). There was no postoperative endothelial cell count reduction to less than 2000 cells/mm(2) or intraocular pressure elevation to more than 21 mm Hg. The differences between preoperative and postoperative angle opening distance at 500 μm from the scleral spur and trabecular-iris angle were statistically significant (P = .000, both). The mean postoperative central vault was 331.83 ± 181.28 μm (range, 174 to 811 μm), which was significantly less than expected (P = .000). Anterior subcapsular cataract was observed in 2 eyes (11.1%).
  
  
  CONCLUSIONS
  Implantable Collamer lens implantation in shallow ACD eyes exhibited good visual outcomes. Severe complications did not develop over relatively long periods. Two cases of anterior subcapsular cataract developed in older aged patients, suggesting the need for thorough preoperative warning about the risk of cataract. In addition, a postoperative vault less than expected should be taken into account when determining implantable Collamer lens size in lower ACD eyes.
authors: Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
authors: Dong Hui
authors: DH
authors: Lim
authors: Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
authors: Min Gyu
authors: MG
authors: Lee
authors: Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
authors: Eui-Sang
authors: ES
authors: Chung
authors: Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. Electronic address: tychung@skku.edu.
authors: Tae-Young
authors: TY
authors: Chung
mesh_terms: D000328:Adult; D000867:Anterior Chamber / Q000000981:diagnostic imaging*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007498:Iris / Q000601:surgery*; D019654:Lens Implantation, Intraocular / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D054120:Phakic Intraocular Lenses; D011184:Postoperative Period; D012029:Refraction, Ocular; D012189:Retrospective Studies; D016896:Treatment Outcome; D014463:Ultrasonography; D014792:Visual Acuity; D055815:Young Adult