1. Articles from Noel C. Y. Chan

    1-3 of 3
    1. Comparison of Peripapillary Vessel Density of Acute Nonarteritic Anterior Ischemic Optic Neuropathy and Other Optic Neuropathies With Disc Swelling Using Optical Coherence Tomography Angiography: A Pilot Study

      Comparison of Peripapillary Vessel Density of Acute Nonarteritic Anterior Ischemic Optic Neuropathy and Other Optic Neuropathies With Disc Swelling Using Optical Coherence Tomography Angiography: A Pilot Study

      Background: The purpose of this study is to quantitatively compare the peripapillary vessel density (PPVD), measured with optical coherence tomography angiography (OCT-A), between acute nonarteritic anterior ischemic optic neuropathy (NAION) and other causes of disc swelling ("others"). Methods: In this prospective comparative case series, patients with unilateral disc swelling due to acute NAION (n = 7) and "others" (n = 7) underwent OCT-A scanning of the optic nerve head with a swept-source OCT (Triton DRI-OCT), in addition to functional assessment. OCT-A images were analyzed using an automated customized MATLAB program. Comparison was made between total and 6 sectoral PPVD (radial peripapillary capillary ...

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    2. The Role of Optical Coherence Tomography in the Acute Management of Neuro-Ophthalmic Diseases

      The Role of Optical Coherence Tomography in the Acute Management of Neuro-Ophthalmic Diseases

      Optical coherence tomography (OCT) can provide highspeed and high-resolution images of the anatomical structures of the optic nerve head and macula. However, in neuro-ophthalmic conditions that present acutely, structural changes lag functional deficits, and the role of OCT in the acute setting has been challenged. This review aims to summarize the recent literature and evidence supporting the use of OCT in the acute management of some common neuro-ophthalmic scenarios, including the differential diagnosis of optic disc swelling, and in patients with suspected papilledema, optic neuritis, ischemic optic neuropathies, and Leber hereditary optic neuropathy. The limitations of OCT are also discussed.

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    3. The use of optical coherence tomography in neuro-ophthalmology

      The use of optical coherence tomography in neuro-ophthalmology

      Purpose of review In the last decade, with the advances of optical coherence tomography (OCT) technology, different imaging protocols and analysis algorithms have been introduced to maximize the potential of this diagnostic tool in the evaluation of different eye diseases. This review aims to provide an update on these additional features, with respect to the management of a diverse range of neuro-ophthalmologic conditions. Recent findings Macular ganglion cell complex (mGCC) analysis has been shown to be superior to peripapillary retinal nerve fiber layer (pRNFL) analysis in certain settings, such as differentiating Leber's hereditary optic neuropathy from functional visual loss ...

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    1-3 of 3
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    The use of optical coherence tomography in neuro-ophthalmology The Role of Optical Coherence Tomography in the Acute Management of Neuro-Ophthalmic Diseases Comparison of Peripapillary Vessel Density of Acute Nonarteritic Anterior Ischemic Optic Neuropathy and Other Optic Neuropathies With Disc Swelling Using Optical Coherence Tomography Angiography: A Pilot Study In vivo dynamic characterization of the human tympanic membrane using pneumatic optical coherence tomography Negative Vessel Remodeling in Stargardt Disease Quantified with Volume-Rendered Optical Coherence Tomography Angiography Spectral Domain – Optical Coherence Tomography findings in Triple-A Syndrome – A case series from Pakistan Feasibility of microscope-integrated swept-source optical coherence tomography in canaloplasty A preliminary study of post-progressive nail-art effects on in vivo nail plate using optical coherence tomography-based intensity profiling assessment Analysis of the Choroid and Its Relationship with the Outer Retina in Patients with Diabetes Mellitus Using Binarization Techniques Based on Spectral-Domain Optical Coherence Tomography Quantifying the Pattern of Retinal Vascular Orientation in Diabetic Retinopathy Using Optical Coherence Tomography Angiography Swept‐source optical coherence tomography objective composite activity score for uveitis Silicone microbubbles after anti‐vascular endothelial growth factor injections in patients with wet age‐related macular degeneration: incidence, quantification and secondary optical coherence tomography artfacts