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K. Kashiwagi, T. Furuya; Comparison of the Scanning Peripheral Anterior Chamber Depth Analyzer and the Anterior Segment Optical Coherence Tomography in the Assessment of Anterior Ocular Segment. Invest. Ophthalmol. Vis. Sci. 2010;51(13):5546.
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© ARVO (1962-2015); The Authors (2016-present)
To compare the scanning peripheral anterior chamber depth analyzer (SPACTM) and the anterior segment optical coherence tomography (CASIATM) in the assessment of anterior ocular segment of eyes with glaucoma
Two devices evaluated anterior ocular segment of patients with glaucoma followed by glaucoma clinic in Yamanashi University Hospital with an operator-masked fashion. Main investigated parameters were central anterior chamber depth (ACD), central corneal thickness (CCT), angle opening distance 500 and 750 (AOD500 and AOD 750), trabecular-irido angle 500 (TIA500), SPACTM-grade, and SPACTM-determined angle-openness.
A total of 156 eyes of 83 glaucoma patients with mean age of 66±13.9 years were enrolled. Two devices showed a significant correlation of ACD (r=0.86, p<0.001). CASIATM showed significantly deeper ACD than SPAC (2.41±0.46mm vs. 2.77±0.50mm, p<0.001). CCT values were similar between CASIATM and SPACTM (532.1±35.7µm vs. 526.2±29.3µm, P=0.1), and two devices showed a significant correlation (r=0.7, p<0.001). AOD500 and AOD 750 were 0.47±0.26mm and 0.60±0.30mm, respectively, and these two showed good correlations with SPAC grade (r=0.71 and 0.67, respectively, p<0.001). There were significant difference in TIA500 and SPACTM-evaluated angle openness (30.8±11.1degree vs. 24.9±7.4 degree, p<0.001). However, their correlation was significant (r=0.62, p<0.001).
CASIATM and SPACTM evaluated the anterior ocular segment with high correlations, but some parameters were significantly difference. We need to consider these features when evaluating the anterior ocular segment using these devices.
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