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Diabetic Macular Edema

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Atlas of Swept Source Optical Coherence Tomography

Abstract

Diabetic macular edema (DME) is one of the most common causes of visual impairment in patients with diabetes mellitus [1]. Physiologically, DME is reported to be induced by disruption of the blood-retinal barrier (BRB) secondary to retinal vessel leukostasis, pericyte loss, and increased permeability of retinal pigment epithelium cells [2]. The disruption of the BRB results in abnormal fluid leakage into the extracellular space and then leads to residual accumulation of fluid into the intraretinal layers [3]. Similarly, various choroidal abnormalities, including obstruction of the choriocapillaris, vascular degeneration, choroidal aneurysms, and choroidal neovascularization, have been reported [4–6]. The introduction of swept source OCT (SS-OCT) made it possible to detect these morphological features of the choroid in patients with DME, such as an irregular-shaped choroidoscleral interface, focal choroidal thinning, and reduction of choriocapillaris layer thickness [7].

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Correspondence to Hideyasu Oh MD, PhD .

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Hirashima, T., Hagihara, M., Oh, H. (2017). Diabetic Macular Edema. In: Michalewska, Z., Nawrocki, J. (eds) Atlas of Swept Source Optical Coherence Tomography . Springer, Cham. https://doi.org/10.1007/978-3-319-49840-9_12

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  • DOI: https://doi.org/10.1007/978-3-319-49840-9_12

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