Soon-Phaik Chee1,2,3,4, Shu-Wen Nicole Chan5, Aliza Jap1,6. 1. a Singapore National Eye Centre , Singapore. 2. b Department of Ophthalmology , Yong Loo Lin School of Medicine, National University of Singapore , Singapore. 3. c Singapore Eye Research Institute , Singapore. 4. d Duke-National University of Singapore Graduate Medical School , Singapore. 5. e National University of Singapore , Singapore. 6. f Division of Ophthalmology , Changi General Hospital , Singapore.
Abstract
PURPOSE: To compare enhanced depth imaging (EDI-OCT) and swept source optical coherence tomography (SS-OCT) in assessment of Vogt-Koyanagi-Harada (VKH) disease. METHODS: All consecutive VKH patients seen at Singapore National Eye Centre during 2012-2013 were imaged using both modalities. Subfoveal choroidal thickness (SFCT) was measured by one masked trained observer. RESULTS: A total of 137 pairs of scans were obtained from 48 patients. SFCT was more likely to be measurable on SS-OCT than EDI-OCT (112, 81.8%; 84, 61.3%; p<0.001 Fisher's Exact test). There was good inter-OCT correlation of SFCT when both scans were measureable (mean of the difference in SFCT ± 2 standard deviations (SD) of -14.5 ± 21.0 μm). CONCLUSIONS: SS-OCT images are superior to EDI-OCT but the SFCT measurements are comparable when both are readable.
PURPOSE: To compare enhanced depth imaging (EDI-OCT) and swept source optical coherence tomography (SS-OCT) in assessment of Vogt-Koyanagi-Harada (VKH) disease. METHODS: All consecutive VKHpatients seen at Singapore National Eye Centre during 2012-2013 were imaged using both modalities. Subfoveal choroidal thickness (SFCT) was measured by one masked trained observer. RESULTS: A total of 137 pairs of scans were obtained from 48 patients. SFCT was more likely to be measurable on SS-OCT than EDI-OCT (112, 81.8%; 84, 61.3%; p<0.001 Fisher's Exact test). There was good inter-OCT correlation of SFCT when both scans were measureable (mean of the difference in SFCT ± 2 standard deviations (SD) of -14.5 ± 21.0 μm). CONCLUSIONS: SS-OCT images are superior to EDI-OCT but the SFCT measurements are comparable when both are readable.
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