Corneal power measurement obtained by fourier-domain optical coherence tomography: Repeatability, reproducibility, and comparison with scheimpflug and automated keratometry measurements

Qinmei Wang, Yanjun Hua, Giacomo Savini, Hao Chen, Fangjun Bao, Shishi Lin, Weicong Lu, Jinhai Huang

Research output: Contribution to journalArticle


Purpose: To assess the repeatability and reproducibility of corneal power values obtained by a Fourier-domain optical coherence tomography (FD-OCT) system (RTVue) and to compare them with the values obtained by a Scheimpflug camera system (Pentacam HR) and by automated keratometry (IOL Master). Methods: Thirty-two eyes from 32 healthy subjects were included in this prospective study. Two experienced observers measured each eye 3 consecutive times with the Pentacam, IOLMaster, and RTVue centered on either the pupil or corneal vertex. The conventional keratometry equivalent (CKE) and anterior (Ka), posterior (Kp), and net (Kn) corneal power values were determined. Results: The corneal power values obtained by the RTVue showed high repeatability (all intraclass correlation coefficient >0.96) and reproducibility (coefficient of variation

Original languageEnglish
Pages (from-to)1266-1271
Number of pages6
Issue number10
Publication statusPublished - Jul 23 2015



  • agreement
  • corneal power
  • optical coherence tomography
  • precision
  • Scheimpflug

ASJC Scopus subject areas

  • Ophthalmology

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