1. Articles from Aurora Alvarez

    1-3 of 3
    1. Influence of Examiner Experience on the Reproducibility of Retinal Nerve Fiber Thickness Values Using Cirrus and Stratus OCTs

      Influence of Examiner Experience on the Reproducibility of Retinal Nerve Fiber Thickness Values Using Cirrus and Stratus OCTs

      Purpose: The purpose of the study was to evaluate the influence of the examiner's experience on the reproducibility of retinal nerve fiber layer (RNFL) measurements obtained with Cirrus optical coherence tomography (OCT) and Stratus. Methods: Fifty-one normal and glaucomatous eyes of 51 participants were included. Two examiners (1 novice, 1 experienced) obtained 2 scans using both OCTs. For quantitative measurements, Bland and Altman limits of agreement were evaluated. For qualitative classifications, [kappa] coefficients were calculated. Results: Signal strength was higher with Cirrus than with Stratus (P

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    2. Cirrus High-Definition Optical Coherence Tomography Compared to Stratus Optical Coherence Tomography in Glaucoma Diagnosis

      Purpose: To compare the retinal nerve fiber layer (RNFL) evaluation using Cirrus optical coherence tomography (OCT) and Stratus OCT in glaucoma diagnosis. Methods: One-hundred-thirty normal and 86 glaucomatous patients were included in this prospective study. The signal strength values using the OCTs were evaluated. The sensitivities/specificities of global RNFL average thickness were compared, in the four quadrants and for each clock hour. Receiver operating characteristic curves (ROC), areas under the ROC (AUC), and likelihood ratio (LR) were plotted for RNFL thickness. Agreement between the OCTs was calculated using Bland-Altman method and kappa (k) coefficient. Results: Twenty-three percent of all ...
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    3. Optical coherence tomography evaluation of posterior capsule opacification related to intraocular lens design

      Purpose To evaluate posterior capsule opacification (PCO) and the impact of different intraocular lens (IOL) models on PCO characteristics using optical coherence tomography (OCT). Methods Eighty-three eyes with PCO (fibrosis or pearl type) and 32 pseudophakic eyes without PCO were included. Horizontal 3.0 mm long OCT scans of the posterior capsule were obtained. Measurements and means of the peak posterior capsule intensity (PCI) and posterior capsule thickness (PCT) (distance between 2 spikes at posterior capsule) at 3 scan points were recorded. The PCI and PCT were compared with best corrected visual acuity (BCVA) and IOL data. Results The PCT ...
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    1-3 of 3
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