This article provides a structured guide to interpreting OCT B scans, beginning with an overview of scan patterns and how they influence image capture and diagnostic value. It explores key principles of image analysis, including localisation of abnormalities, assessment of reflectivity, and evaluation of RPE integrity to support differential diagnosis. The article also covers the interpretation of OCT in specific contexts, including macular disease, optic nerve assessment and anterior segment imaging. This is part two of a two-part series.

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