Optical coherence tomography

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A general imaging technique that uses interference between light to resolve partially transparent structures typically to about 3 mm depth, but with µm resolution. Presently the most important routine medical application is to assess retinal thickness, for which it was first demonstrated around 1993. It is useful for quantifying macular oedema and subretinal fluid[1]. Other applications include imaging the anterior segment of the eye[2], the inner ear[3], mucosal surfaces[4] and the endothelial (atherosclerotic) layers of vessels[5],

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