Browsing by Author "Tao, Yuankai K"

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    Intraoperative spectral domain optical coherence tomography for vitreoretinal surgery.
    (Opt Lett, 2010-10-15) Tao, Yuankai K; Ehlers, Justis P; Toth, Cynthia A; Izatt, Joseph A
    We demonstrate in vivo human retinal imaging using an intraoperative microscope-mounted optical coherence tomography system (MMOCT). Our optomechanical design adapts an Oculus Binocular Indirect Ophthalmo Microscope (BIOM3), suspended from a Leica ophthalmic surgical microscope, with spectral domain optical coherence tomography (SD-OCT) scanning and relay optics. The MMOCT enables wide-field noncontact real-time cross-sectional imaging of retinal structure, allowing for SD-OCT augmented intrasurgical microscopy for intraocular visualization. We experimentally quantify the axial and lateral resolution of the MMOCT and demonstrate fundus imaging at a 20Hz frame rate.
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    Spectrally encoded confocal scanning laser ophthalmoscopy
    (Optics Letters, 2010-02-15) Tao, Yuankai K; Izatt, Joseph A
    We present in vivo human fundus imaging using a fiber-based confocal scanning laser ophthalmoscope (SLO). Spectrally encoded confocal scanning laser ophthalmoscopy (SECSLO) utilizes a spectral encoding technique in one dimension, combined with single-axis lateral scanning, to create video-rate reflectivity maps of the fundus. This implementation of the SLO allows for high-contrast high-resolution in vivo human retinal imaging through a single-mode optical fiber. We experimentally quantify the full confocality of SECSLO in both the spectrally encoded and laterally scanned dimensions, and demonstrate 50 Hz frame rate fundus imaging. © 2010 Optical Society of America.