Visibility of Optic Nerve Head Structures With Spectral-domain and Swept-source Optical Coherence Tomography
| Autor: | Donna M. Hutchison, Mónica M. Loureiro, Vishva M Danthurebandara, Jayme R Vianna, Balwantray C. Chauhan, Marcelo T. Nicolela, Glen P. Sharpe |
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| Rok vydání: | 2017 |
| Předmět: |
Male
Lamina genetic structures Optic Disk Glaucoma Spectral domain Scan line 03 medical and health sciences 0302 clinical medicine Optical coherence tomography Anterior Eye Segment Optic Nerve Diseases medicine Humans Intraocular Pressure Aged Observer Variation medicine.diagnostic_test business.industry Reproducibility of Results Middle Aged medicine.disease eye diseases Sclera Ophthalmology medicine.anatomical_structure 030221 ophthalmology & optometry Optic nerve Female Bruch Membrane sense organs Raster scan business Nuclear medicine Glaucoma Open-Angle Tomography Optical Coherence 030217 neurology & neurosurgery |
| Zdroj: | Journal of Glaucoma. 26:792-797 |
| ISSN: | 1057-0829 |
| Popis: | PURPOSE To compare the visibility of deep optic nerve head (ONH) structures and the visible area of the anterior surface of the lamina cribrosa (ASLC) with spectral-domain optical coherence tomography (SD-OCT) and swept-source OCT (SS-OCT). MATERIALS AND METHODS In total, 33 glaucoma patients were imaged with SD-OCT (Spectralis, 24 radial B-scans centered on the ONH) and SS-OCT (Atlantis, 12 radial and a horizontal and vertical raster scan pattern containing 5 lines each, centered on the ONH). One of the SS-OCT horizontal and vertical scans that was best matching with the horizontal and vertical scan lines with those of SD-OCT was selected. All B-scans were then exported and deidentified. An independent observer determined whether the posterior choroid, border tissue, anterior scleral canal opening, and LC insertion into the sclera were detectable in the matched scan lines. Bruch membrane opening (BMO) and ASLC were segmented manually in radial scans. The segmented points were combined into a single plane and a linear interpolation was used to define BMO and ASLC areas. RESULTS The posterior choroid, border tissue, and anterior scleral canal opening were detectable in most patients (94% to 100%, 88% to 100%, and 76% to 100%, respectively) and were not different between SD-OCT and SS-OCT. The LC insertion detection rate was nonstatistically higher for SS-OCT compared with SD-OCT (58% to 85% vs. 42% to 73%; P>0.10). The mean (SD) ASLC visible area (percentage of the respective BMO area) was 124 (30%) with SD-OCT and 135 (32%) with SS-OCT (P |
| Databáze: | OpenAIRE |
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