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OCT’s high resolution tomographic images.  It integrats SLO’s confocal imaging principles with Scanner device providing high-resolution, high-definition  The Spectral OCT/SLO is a computerized optical (Toronto, Canada) to develop the Spectral  This rationale was used by OTI technologies Integrating a scanning laser ophthalmoscopy  To localize and visually interpret the images,  Limitation of OCT technology was difficulty inĪccurately localizing the cross-sectional imagesĪnd correlating them with a conventional en face  FD-OCT is also fast enough for sequential imageįrames to track the pulsation of blood vessels during TD-OCT, in which signals from various depths are  The simultaneous detection of reflections from aīroad range of depths is much more efficient than Required thus, FD-OCT can be much faster than  No physical scanning of the reference mirror is Produced by interference between the sample and  The spectrometer measures spectral modulations Interferometer uses a spectrometer instead a single  In FD-OCT ,the detector arm of the Michelson Time delay of the reference light pulse is adjusted Position of the reference mirror is changed so that the  In order to measure the time delays of light echoesĬoming from different structures within the eye, the Rotation of a sample arm galvonometer mirror.  Transverse scanning of the sample is achieved via Inversely proportional to its optical bandwidth.  The axial optical sectioning ability of the technique is Wave and the backscattered sample wave is then recorded.  The interference signal between the reflected reference  The Michelson interferometer splits the light from theīroadband source into two paths, the reference and

Variations in the refractive index within tissue. Heterogeneous medium, and occurs because of Scattering is a fundamental property of a  The first commercial instrument, OCT 1,was launched Topographic image of the retinal pigment epithelium  In 1990, Fercher presented cross-sectional  OCT is noncontact noninvasive technique for imaging Principles of optical coherence tomography