1. Optical coherence tomography: A guide to interpretation of common macular diseases

    Optical coherence tomography: A guide to interpretation of common macular diseases

    Optical coherence tomography (OCT) is an optical analog of ultrasound imaging that uses low coherence interferometry to produce cross-sectional images of the retina. It captures optical scattering from the tissue to decode spatial details of tissue microstructures. It uses infrared light from a super-luminescent diode that is divided into two parts: one of which is reflected from a reference mirror and the other is scattered from the biological tissue. The two reflected beams of light are made to produce interference patterns to obtain the echo time delay and their amplitude information that makes up an A-Scan. A-Scans that are captured ...

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