Systemic vascular alterations Diabetes mellitus, systemic hypertension, carotid insufficiency, age-related atherosclerosis Ocular diseases Open-angle glaucoma, ischemic optic neuropathy, pseudotumor cerebri, tilted optic nerve heads, optic nerve head drusen Hematologic alterations/hyperviscosity…
Fig. 9.1 SD-OCT showing intact inner segment ellipsoid zone (red arrow) Using ultrahigh resolution SD-OCT images of human foveal cone photoreceptors, Fernandez et al. in 2008 identified the ellipsoid and…
Device (manufacturer) Axial resolution Scanning rate Special characteristics Scans available 3D-OCT 2000 (Topcon, Tokyo, Japan) 5 μm 27 kHz Fundus camera Fast map, box scan 5- and 9-line raster, line…
© Springer India 2017Carsten H. Meyer, Sandeep Saxena and SriniVas R Sadda (eds.)Spectral Domain Optical Coherence Tomography in Macular Diseases10.1007/978-81-322-3610-8_7 7. Spectral Domain Optical Coherence Tomography-Based Imaging Biomarkers and Hyperspectral Imaging Surabhi Ruia1 and Sandeep Saxena1 (1) Department…
The term stroke includes cerebral ischemia (transient ischemic attacks and cerebral infarctions) and cerebral hemorrhage. A stroke is suspected when a patient presents with acute neurologic symptoms and signs (acute…
Fig. 8.1 a–c (a) Normal left optic nerve appearance in posterior optic neuropathy (onset < 6 weeks). (b) Right optic nerve head swelling (edema) in anterior optic neuropathy. (c) Right optic…
Knowing what to look for before ordering ancillary testing will allow you to recommend the appropriate test and interpret that test correctly. For example, brain imaging obtained for the evaluation…
Retinal Artery Occlusions Central retinal and branch retinal artery occlusions produce acute monocular visual loss. Unless the retinal vascular occlusion is secondary to giant cell arteritis or to a carotid…
