title: Evaluation of the repeatability of a swept-source ocular biometer for measuring ocular biometric parameters.
abstract: OBJECTIVE
  The purpose was to evaluate the repeatability of a new swept-source optical biometer for measuring ocular biometric parameters.
  
  
  METHODS
  Thirty subjects with healthy and phakic eyes were included in this study, and only one eye per participant was analysed. Each eye was measured five times with the IOLMaster 700 swept-source optical biometer (Carl Zeiss Meditec, Jena, Germany). Axial length (AL), anterior chamber depth (ACD), central corneal thickness (CCT), lens thickness (LT), white-to-white (WTW), and K1 and K2 keratometric readings were evaluated. The repeatability of swept-source biometry was evaluated on the basis of five measurements captured for each patient.
  
  
  RESULTS
  The repeatability limits for the axial measurements AL, ACD, CCT, and LT were 0.03, 0.07, 0.004, and 0.11 mm, respectively. For the WTW distance and both keratometry readings, the repeatability limits were 0.20, 0.06, and 0.05 mm, respectively. The AL resulted in the lowest coefficient of variation, and the LT had the highest one. The spherical equivalent showed statistically significant negative correlations with the AL and ACD.
  
  
  CONCLUSIONS
  Swept-source optical biometry showed high repeatability performance for all biometric parameters in healthy eyes, where the correlation between the spherical equivalent and AL showed the strongest value.
authors.affiliation: Department of Optics and Optometry and Visual Sciences, University of Valencia, C/ Dr Moliner, 50, Burjassot, 46100, Valencia, Spain.
authors.forename: Teresa
authors.initials: T
authors.lastname: Ferrer-Blasco
authors.affiliation: Department of Optics and Optometry and Visual Sciences, University of Valencia, C/ Dr Moliner, 50, Burjassot, 46100, Valencia, Spain. alberto.vicent@uv.es.
authors.forename: Alberto
authors.initials: A
authors.lastname: Domínguez-Vicent
authors.affiliation: Department of Optics and Optometry and Visual Sciences, University of Valencia, C/ Dr Moliner, 50, Burjassot, 46100, Valencia, Spain.
authors.forename: José J
authors.initials: JJ
authors.lastname: Esteve-Taboada
authors.affiliation: Departamento de Astronomía y Astrofísica, University of Valencia, Valencia, Spain.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Aloy
authors.affiliation: Departamento de Astronomía y Astrofísica, University of Valencia, Valencia, Spain.
authors.forename: Jose E
authors.initials: JE
authors.lastname: Adsuara
authors.affiliation: Department of Optics and Optometry and Visual Sciences, University of Valencia, C/ Dr Moliner, 50, Burjassot, 46100, Valencia, Spain.
authors.forename: Robert
authors.initials: R
authors.lastname: Montés-Micó
mesh_terms: D000328:Adult; D000869:Anterior Eye Segment / Q000033:anatomy & histology*; D058452:Axial Length, Eye / Q000033:anatomy & histology*; D001699:Biometry / Q000295:instrumentation*; D004867:Equipment Design; D005260:Female; D006801:Humans; D007908:Lens, Crystalline / Q000033:anatomy & histology*; D008297:Male; D011446:Prospective Studies; D015203:Reproducibility of Results; D055815:Young Adult
keywords: Anterior chamber depth repeatability; Anterior segment repeatability; Axial length repeatability; Corneal thickness repeatability; IOLMaster 700; Lens repeatability