title: Comparability of anterior chamber depth measurements with partial coherence interferometry and optical low-coherence reflectometry in pseudophakic eyes.
abstract: OBJECTIVE
  To assess whether anterior chamber depth (ACD) measurements in pseudophakic eyes obtained with partial coherence interferometry (PCI) and optical low-coherence reflectometry (OLCR) devices can be used interchangeably.
  
  
  METHODS
  Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria.
  
  
  METHODS
  Prospective case series.
  
  
  METHODS
  The ACD measurements in 1 eye of each pseudophakic patient were performed with the PCI-based ACMaster device and the OLCR-based Lenstar LS900 device at least 1 day postoperatively.
  
  
  RESULTS
  The study comprised 65 eyes of 65 patients with a mean age of 71.7 years ± 9.0 (SD) (range 39 to 91 years). In 15 eyes, no valid ACD readings could be obtained with the OLCR device. No obvious reason for these measurement failures was identified; however, tear-film alterations shortly after surgery were suspected. No significant difference in the mean ACD in the remaining 50 eyes was found between PCI measurements (5019 ± 660 μm; range 4008 to 6181 μm) and OLCR measurements (5015 ± 663 μm; range 4017 to 6163 μm) (P = .06). Three (6%) of 50 measurements were not within the 95% limits of agreement in the Bland-Altman analysis.
  
  
  CONCLUSIONS
  Pseudophakic ACD measurements with the PCI and OLCR devices can be used interchangeably. The OLCR device proved to be more user-friendly and faster; however, in a substantial number of eyes, no usable values were obtainable.
  
  
  BACKGROUND
  No author has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From the Vienna Institute for Research in Ocular Surgery (Luft, Hirnschall, Farrokhi, Findl), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria; Moorfields Eye Hospital NHS Foundation Trust (Findl), London, United Kingdom.
authors.forename: Nikolaus
authors.initials: N
authors.lastname: Luft
authors.affiliation: From the Vienna Institute for Research in Ocular Surgery (Luft, Hirnschall, Farrokhi, Findl), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria; Moorfields Eye Hospital NHS Foundation Trust (Findl), London, United Kingdom.
authors.forename: Nino
authors.initials: N
authors.lastname: Hirnschall
authors.affiliation: From the Vienna Institute for Research in Ocular Surgery (Luft, Hirnschall, Farrokhi, Findl), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria; Moorfields Eye Hospital NHS Foundation Trust (Findl), London, United Kingdom.
authors.forename: Sanaz
authors.initials: S
authors.lastname: Farrokhi
authors.affiliation: From the Vienna Institute for Research in Ocular Surgery (Luft, Hirnschall, Farrokhi, Findl), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria; Moorfields Eye Hospital NHS Foundation Trust (Findl), London, United Kingdom. Electronic address: oliver@findl.at.
authors.forename: Oliver
authors.initials: O
authors.lastname: Findl
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000473:pathology*; D001699:Biometry / Q000379:methods; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D005260:Female; D006801:Humans; D007368:Interferometry / Q000295:instrumentation*; D019654:Lens Implantation, Intraocular; D008027:Light; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D018918:Phacoemulsification; D011446:Prospective Studies; D019591:Pseudophakia / Q000503:physiopathology*