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BioMed Research International
Volume 2014, Article ID 275654, 6 pages
Research Article

Assessment of the Optic Disc Morphology Using Spectral-Domain Optical Coherence Tomography and Scanning Laser Ophthalmoscopy

1Ophthalmology Department, Miguel Servet University Hospital, Aragon Health Sciences Institute, Isabel la Catolica 1–3, 50009 Zaragoza, Spain
2Department of Surgery, Ginecology and Obstetrics, University of Zaragoza, 50009 Zaragoza, Spain
3Department of Neurosciences, University of Pisa, 56126 Pisa, Italy
4Department of Ophthalmology, University of Siena, 53100 Siena, Italy

Received 27 February 2014; Accepted 19 June 2014; Published 6 July 2014

Academic Editor: Dan Milea

Copyright © 2014 Pilar Calvo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. To compare the equivalent optic nerve head (OHN) parameters obtained with confocal scanning laser ophthalmoscopy (HRT3) and spectral-domain optical coherence tomography (OCT) in healthy and glaucoma patients. Methods. One hundred and eighty-two consecutive healthy subjects and 156 patients with open-angle glaucoma were divided into 2 groups according to intraocular pressure and visual field outcomes. All participants underwent imaging of the ONH with the HRT3 and the Cirrus OCT. The ONH parameters and the receiver operating characteristic (ROC) curves were compared between both groups. Results. Mean age did not differ between the normal and glaucoma groups (59.55 ± 9.7 years and 61.05 ± 9.4 years, resp.; ). Rim area, average cup-to-disc (C/D) ratio, vertical C/D ratio, and cup volume were different between both instruments ( ). All equivalent ONH parameters, except disc area, were different between both groups ( ). The best areas under the ROC curve were observed for vertical C/D ratio (0.980 for OCT and 0.942 for HRT3; ). Sensitivities at 95% fixed-specificities of OCT parameters were higher than those of HRT3. Conclusions. Equivalent ONH parameters of Cirrus OCT and HRT3 are different and cannot be used interchangeably. ONH parameters measured with OCT yielded a slightly better diagnostic performance.