Serum Homocysteine and Eye

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Basic Interpretation of OCT angiography

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Basic Interpretation of OCT angiography Introduction: OCTA is a non-invasive, non-dye imaging system that has ability to recognize both structural and blood flow information within retina. Concept of OCTA is that it employs motion contrast imaging resolution volumetric blood flow information which helps in  generating angiographic images . Use of SSADA( Split spectrum amplitude decorrelation angiography) algorithm helps to compare decorrelation signal between segmental OCT B scan taken at precisely same cross section in order to construct a map of blood flow. As retina has capillaries in various layers allows retinal segmentation into specific layers. 4 slabs which has been arbitrarily divided : 1.      Superficial retinal capillary plexus: capillary network in ganglion cell layer. Between ILM to inner plexiform layer 2.      Deep retinal capillary plexus: capillary network between inner plexiform and outerplexifor...
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