1. High-resolution wide-field imaging of retinal and choroidal blood perfusion with optical microangiography

    High-resolution wide-field imaging of retinal and choroidal blood perfusion with optical microangiography
    We present high-resolution wide-field imaging of retinal and choroidal blood perfusion with optical microangiography (OMAG) technology. Based on spatial frequency analysis, OMAG is capable of visualizing the vascular perfusion map down to capillary-level resolution. An OMAG system operating at 840 nm is used with an A-scan rate of 27,000 Hz, axial resolution of 8 µm, and sensitivity of 98 dB. To achieve wide-field imaging, we capture 16 optical coherence tomography (OCT) 3-D datasets in a sequential order, which together provide an area of ~7.4×7.4 mm2 at the posterior segment of the human eye. For each of ...
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