Reproducibility of optic disk topographic measurements with the Topcon ImageNet and the Heidelberg Retina Tomograph

Augusto Azuara-Blanco, Alon Harris, L. B. Cantor

Research output: Contribution to journalArticle

19 Scopus citations


Objective: To compare the reproducibility of optic disk measurements provided by an image analyzer and a scanning laser tomograph. Methods: Ten images of the same eye of 10 normal volunteers were taken with the Heidelberg Retina Tomograph and with the Topcon ImageNet. Intraclass correlation coefficient (ICC) and coefficient of variation (CV) were used to evaluate the reproducibility of the measurements. Results: Eleven parameters were analyzed with the Topcon ImageNet. Six parameters (55%) had ICC greater than 90%. Four parameters (36%) had CV less than 10%. Twelve parameters were evaluated with the Heidelberg Retina Tomograph. Nine parameters (75%) had ICC over 90%. Nine parameters (75%) had CV less than 10%. Conclusion: Both systems provided reproducible data. The optic disk parameters provided by the Heidelberg Retina Tomograph had a better reproducibility than those obtained from the Topcon ImageNet.

Original languageEnglish (US)
Pages (from-to)95-98
Number of pages4
Issue number2
StatePublished - Feb 17 1998



  • Confocal laser
  • Diagnosis
  • Image analysis
  • Laser
  • Optic nerve head
  • Reliability
  • Variability

ASJC Scopus subject areas

  • Ophthalmology

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