1. Articles from Kannan Narayana

    1-3 of 3
    1. Optical coherence tomography in an optic tract lesion, Retinal nerve fiber layer changes

      Optical coherence tomography in an optic tract lesion, Retinal nerve fiber layer changes

      A 49-year-old woman, status post temporal lobe resection, reported a hemianopia. Examination revealed a right afferent pupillary defect, horizontal bow-tie atrophy OD (temporal and nasal), and temporal atrophy OS. Optical coherence tomography showed a bow-tie pattern OD and predominant superior and inferior nerve fiber layer loss OS (figure 1; figure e-1 at Neurology.org ). The pattern OD is due to the combination of papillomacular bundle and nasal RNFL loss. The pattern OS is due to nerve fiber layer loss temporal to the fovea and, coupled with papillomacular bundle loss, produces temporal pallor. 1 MRI confirmed left optic tract atrophy (figure ...

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    2. Utility of optical coherence tomography in the evaluation of monocular visual loss related to retinal ischemia

      Utility of optical coherence tomography in the evaluation of monocular visual loss related to retinal ischemia

      We report four patients with monocular visual loss for whom optical coherence tomography (OCT) was helpful in distinguishing the sequelae of retinal artery occlusion from those of primary optic neuropathy. Determinations of the peripapillary retinal nerve fiber layer (RNFL) thickness as well as macular retinal layer thicknesses and architecture were used. The major findings in our patients show that changes in the inner retinal layers (including ganglion cell and inner plexiform layer) with disruption of normal macular architecture supports a diagnosis of retinal artery occlusion. Our results support the use of OCT imaging for patients with monocular visual loss of ...

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      Mentions: Laura J. Balcer
    3. Optical Coherence Tomography for the Neurologist

      Optical Coherence Tomography for the Neurologist

      Optical coherence tomography (OCT) is a relatively new technology that is now routinely and very widely used by ophthalmologists for structural documentation of the optic nerve and retina. In neuro-ophthalmology and neurology, the value of OCT is ever expanding; its role in an increasing number of conditions is being reported in parallel with the advances of the technology. Currently, as a clinical tool, OCT is particularly useful for the structural measurement of peripapillary retinal nerve fiber layer thickness, optic nerve head volumetric analysis, and macular anatomy. Optic neuropathies of varied etiology (particularly from multiple sclerosis) may be the most common ...

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      Mentions: Laura J. Balcer
    1-3 of 3
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  2. Topics in the News

    1. (3 articles) Laura J. Balcer
    2. (1 articles) Johns Hopkins University
    3. (1 articles) Technical University of Denmark (DTU)
    4. (1 articles) Columbia University
    5. (1 articles) Peking University
    6. (1 articles) Capital Medical University
    7. (1 articles) Cardiovascular Research Foundation
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    Optical Coherence Tomography for the Neurologist Utility of optical coherence tomography in the evaluation of monocular visual loss related to retinal ischemia Optical coherence tomography in an optic tract lesion, Retinal nerve fiber layer changes A case report of a coronary myocardial bridge with impaired full-cycle ratio during dobutamine challenge Diagnosis of chronic stage of hypertensive retinopathy based on spectral domain optical coherence tomography A Cross-sectional Optical Coherence Tomography Study in Patients on Taxane-based Therapy and A Case Report with the Literature Review Determination of peripapillary vessel density in optic disc drusen using EDI-OCT and OCT angiography Optical coherence tomography features of neovascularization in proliferative diabetic retinopathy: a systematic review Retinal microvascular metrics in untreated essential hypertensives using optical coherence tomography angiography Optical coherence tomography angiography findings of fellow eye of proliferative macular telangiectasia type 2: Long term study Reorganization of the perifoveal microvasculature after macular hole closure assessed via optical coherence tomography angiography Methotrexate impaired in-vivo matured mouse oocyte quality and the possible mechanisms