2005
DOI: 10.1001/archopht.123.8.1053
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Comparison of Optical Coherence Tomography and Ultrasound Biomicroscopy for Detection of Narrow Anterior Chamber Angles

Abstract: To assess the accuracy of classification of narrow anterior chamber (AC) angles using quantitative imaging by optical coherence tomography (OCT) and ultrasound biomicroscopy (UBM).Design: Observational comparative study.Methods: A high-speed (4000 axial scans/s) anterior segment OCT prototype was developed using a 1.3-µm light source. Seventeen normal subjects (17 eyes) and 7 subjects (14 eyes) with narrow angle glaucoma were enrolled. All subjects underwent gonioscopy, OCT, and UBM. Quantitative AC angle para… Show more

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Cited by 365 publications
(342 citation statements)
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“…The details of AS-OCT imaging technology have been described previously. 8 Image acquisition using AS-OCT was performed under the same room lighting conditions, in random order by a single experienced operator (HTA) masked to other test results. Scans of the ACA of each eye were obtained at the 3 and 9 o'clock positions (horizontal), and at the 6 and 12 o'clock positions (vertical).…”
Section: Gonioscopymentioning
confidence: 99%
See 1 more Smart Citation
“…The details of AS-OCT imaging technology have been described previously. 8 Image acquisition using AS-OCT was performed under the same room lighting conditions, in random order by a single experienced operator (HTA) masked to other test results. Scans of the ACA of each eye were obtained at the 3 and 9 o'clock positions (horizontal), and at the 6 and 12 o'clock positions (vertical).…”
Section: Gonioscopymentioning
confidence: 99%
“…[1][2][3][4][5][6] Two commercial AS-OCT devices are currently availableFVisante-OCT (Carl-Zeiss Meditec, Dublin, CA, USA) and slitlamp-OCT (SL-OCT, Heildelberg Engineering, Heildelberg, Germany). Although both devices rely on the principle of low-coherence interferometry, there are some differences in the way each device acquires and processes the images.…”
Section: Introductionmentioning
confidence: 99%
“…Image acquisition can be performed by a technician with minimal experience. Several studies have evaluated quantitative measurement of the AC angle using AS-OCT. 10,11 A pilot study comparing the AS-OCT prototype to UBM in 17 normal and 14 narrow angle eyes showed good reproducibility between the two devices but found a tendency of UBM to give smaller measures when a statistical significance was present. 11 Another trial that only looked at nasal and temporal iridocorneal angles of 63 normal eyes found good correlation for these parameters.…”
Section: Introductionmentioning
confidence: 99%
“…Several studies have evaluated quantitative measurement of the AC angle using AS-OCT. 10,11 A pilot study comparing the AS-OCT prototype to UBM in 17 normal and 14 narrow angle eyes showed good reproducibility between the two devices but found a tendency of UBM to give smaller measures when a statistical significance was present. 11 Another trial that only looked at nasal and temporal iridocorneal angles of 63 normal eyes found good correlation for these parameters. 12 The legitimation and aim of this study was to comprehensively compare the quantitative assessment of the anterior segment anatomy by UBM and the commercially available AS-OCT (Visante OCT) in European patients with primary angle-closure suspicion (PACS), PAC, and PACG as defined by Foster et al 13 …”
Section: Introductionmentioning
confidence: 99%
“…Parameters including the angle-opening distance (AOD), trabecular iris angle (TIA), angle recess area (ARA), and trabecular iris space area (TISA) have been widely adopted to measure the angle dimensions and all of them are measured with reference to the scleral spur ( Figure 2). 7,8 However, the scleral spur may not always be visible even with the anterior segment OCT. In a clinic-based study, including 502 participants aged 50 years or older, Sakata et al 9 showed the scleral spur was detected in 72% of the Visante OCT images and that the superior and inferior quadrants were less detectable compared with the nasal and temporal quadrants.…”
Section: Visibility Of the Scleral Spur In Anterior Segment Oct Imagingmentioning
confidence: 99%