title: Comparison of preoperative and postoperative ocular biometry in eyes with phakic intraocular lens implantations.
abstract: OBJECTIVE
  To compare preoperative and postoperative ocular biometry in patients with iris-fixated phakic intraocular lens (pIOLs): Artisan and Artiflex.
  
  
  METHODS
  This study included 40 eyes with Artisan and 36 eyes with Artiflex pIOL implants. Anterior chamber depth (ACD) and axial length (AL) were measured by applanation ultrasonography (A-scan) and partial coherence interferometry (IOLMaster) preoperatively and 3 months after pIOL implantation.
  
  
  RESULTS
  ACD measurements after Artisan or Artiflex pIOL implantation were smaller than preoperative measurements. Specifically, the difference after Artisan pIOL implantation was -1.07 ± 0.17 mm by A-scan and -0.08 ± 0.08 mm by IOLMaster. The difference after Artiflex pIOL implantation was -1.31 ± 0.15 mm by A-scan and -0.05 ± 0.07 mm by IOLMaster. After Artisan pIOL implantation, differences in AL measurements by A-scan were insignificant (difference: -0.03 ± 0.15 mm), whereas postoperative AL measurements by IOLMaster were significantly longer than preoperative measurements (difference: 0.12 ± 0.07 mm). After Artiflex pIOL implantation, AL measurements by both A-scan and IOLMaster were significantly longer than preoperative measurements (difference: 0.09 ± 0.16 mm by A-scan and 0.07 ± 0.10 mm by IOLMaster). In the Artiflex group, differences in AL measurements by A-scan correlated with the central thickness of the Artiflex pIOL.
  
  
  CONCLUSIONS
  ACD and AL measurements were influenced by iris-fixated phakic IOL implantation.
authors.affiliation: Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Joo Youn
authors.initials: JY
authors.lastname: Shin
authors.forename: Jae Bum
authors.initials: JB
authors.lastname: Lee
authors.forename: Kyoung Yul
authors.initials: KY
authors.lastname: Seo
authors.forename: Eung Kweon
authors.initials: EK
authors.lastname: Kim
authors.forename: Tae-im
authors.initials: TI
authors.lastname: Kim
mesh_terms: D000328:Adult; D001699:Biometry; D005123:Eye / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007368:Interferometry; D019654:Lens Implantation, Intraocular / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D014463:Ultrasonography
keywords: Biometry; anterior chamber depth; axial length; phakic intraocular lenses
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