title: Agreement between Pentacam and IOL master in patients undergoing toric IOL implantation.
abstract: OBJECTIVE
  To investigate inter-device agreement between the Pentacam (Optikgerate GmbH, Wetzlar, Germany) and IOLMaster (Carl Zeiss Meditec, Jena, Germany) in measuring corneal power, cylinder, and axis of astigmatism.
  
  
  METHODS
  Retrospective case series reviewing the status of eyes after toric IOL implantation to evaluate inter-device agreement in measuring corneal power, cylinder, and axis of astigmatism.
  
  
  RESULTS
  Forty-nine eyes from 41 patients were evaluated. Agreement for corneal power and cylinder were deemed good and moderate, with 95% limits of agreement of -1.02 to +1.13 and -1.37 to +1.09 diopters (D), respectively. Agreement for axis of astigmatism was only fair, with a mean absolute difference of 8.9 degrees (range: 0.3 to 37.7 degrees, standard deviation: 8.79 degrees). Thirty percent of eyes had a 10-degree or greater difference in axis measurements, and 13% of eyes had a 20-degree or greater difference in measurements. Analysis by multivariate logistic regression showed higher cylinder powers associated with discrepant corneal power measurements (odds ratio: 3.46, P = .02), and increasing age was associated with discrepant axis measurements (odds ratio: 1.09, P = .03). Overall, there was no significant difference in accuracy predicting postoperative spherical equivalent refraction.
  
  
  CONCLUSIONS
  Pentacam and IOLMaster agree well for corneal power but less so for cylinder and axis of astigmatism and thus cannot be used interchangeably.
authors: Bascom Palmer Eye Institute, University of Miami, Florida, USA.
authors: Bradford W
authors: BW
authors: Lee
authors: Anat
authors: A
authors: Galor
authors: William J
authors: WJ
authors: Feuer
authors: Bozorgmehr
authors: B
authors: Pouyeh
authors: Jesse S
authors: JS
authors: Pelletier
authors: Pravin K
authors: PK
authors: Vaddavalli
authors: Benjamin T
authors: BT
authors: Lemelman
authors: Craig
authors: C
authors: See
authors: Sonia H
authors: SH
authors: Yoo
mesh_terms: D000368:Aged; D001251:Astigmatism / Q000175:diagnosis*; D003315:Cornea / Q000473:pathology*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D012029:Refraction, Ocular / Q000502:physiology; D015203:Reproducibility of Results; D014792:Visual Acuity / Q000502:physiology